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1442443201 = 6721529003
BaseRepresentation
bin101010111111001…
…1110111111000001
310201112012201002021
41111332132333001
510423231140301
6355044321441
750513364523
oct12576367701
93645181067
101442443201
11680248a21
123430a3281
1319cabc3b4
14d97dda13
158697a8a1
hex55f9efc1

1442443201 has 4 divisors (see below), whose sum is σ = 1463972272. Its totient is φ = 1420914132.

The previous prime is 1442443133. The next prime is 1442443231. The reversal of 1442443201 is 1023442441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1442443201 - 223 = 1434054593 is a prime.

It is a super-2 number, since 2×14424432012 = 4161284776222252802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442443231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10764435 + ... + 10764568.

It is an arithmetic number, because the mean of its divisors is an integer number (365993068).

Almost surely, 21442443201 is an apocalyptic number.

It is an amenable number.

1442443201 is a deficient number, since it is larger than the sum of its proper divisors (21529071).

1442443201 is an equidigital number, since it uses as much as digits as its factorization.

1442443201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21529070.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1442443201 is about 37979.5102785699. The cubic root of 1442443201 is about 1129.8815238514.

Adding to 1442443201 its reverse (1023442441), we get a palindrome (2465885642).

The spelling of 1442443201 in words is "one billion, four hundred forty-two million, four hundred forty-three thousand, two hundred one".

Divisors: 1 67 21529003 1442443201