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3042515281 = 13242432
BaseRepresentation
bin1011010101011001…
…0001100101010001
321212001000210100011
42311112101211101
522212340442111
61221523354521
7135252644641
oct26526214521
97761023304
103042515281
111321469843
1270ab22a41
1339644bc00
1420c112521
1512c191021
hexb5591951

3042515281 has 9 divisors (see below), whose sum is σ = 3295334619. Its totient is φ = 2807813736.

The previous prime is 3042515269. The next prime is 3042515303. The reversal of 3042515281 is 1825152403.

The square root of 3042515281 is 55159.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 450076225 + 2592439056 = 21215^2 + 50916^2 .

It is not a de Polignac number, because 3042515281 - 27 = 3042515153 is a prime.

It is a super-3 number, since 3×30425152813 (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3042515221) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 714946 + ... + 719188.

It is an arithmetic number, because the mean of its divisors is an integer number (366148291).

Almost surely, 23042515281 is an apocalyptic number.

3042515281 is the 55159-th square number.

3042515281 is the 27580-th centered octagonal number.

It is an amenable number.

3042515281 is a deficient number, since it is larger than the sum of its proper divisors (252819338).

3042515281 is an frugal number, since it uses more digits than its factorization.

3042515281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8512 (or 4256 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The cubic root of 3042515281 is about 1449.0307086760.

Adding to 3042515281 its reverse (1825152403), we get a palindrome (4867667684).

The spelling of 3042515281 in words is "three billion, forty-two million, five hundred fifteen thousand, two hundred eighty-one".

Divisors: 1 13 169 4243 55159 717067 18003049 234039637 3042515281