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254142001 = 1621156781
BaseRepresentation
bin11110010010111…
…10011000110001
3122201012202021201
433021132120301
51010030021001
641115051201
76204112531
oct1711363061
9581182251
10254142001
11120502713
1271140b01
1340862aa9
1425a774c1
15174a1501
hexf25e631

254142001 has 4 divisors (see below), whose sum is σ = 254300404. Its totient is φ = 253983600.

The previous prime is 254141983. The next prime is 254142029. The reversal of 254142001 is 100241452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169520400 + 84621601 = 13020^2 + 9199^2 .

It is a cyclic number.

It is not a de Polignac number, because 254142001 - 213 = 254133809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 254142001.

It is not an unprimeable number, because it can be changed into a prime (254142041) 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, 76770 + ... + 80011.

It is an arithmetic number, because the mean of its divisors is an integer number (63575101).

Almost surely, 2254142001 is an apocalyptic number.

It is an amenable number.

254142001 is a deficient number, since it is larger than the sum of its proper divisors (158403).

254142001 is a wasteful number, since it uses less digits than its factorization.

254142001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158402.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 254142001 is about 15941.8317956250. The cubic root of 254142001 is about 633.4205489925.

Adding to 254142001 its reverse (100241452), we get a palindrome (354383453).

The spelling of 254142001 in words is "two hundred fifty-four million, one hundred forty-two thousand, one".

Divisors: 1 1621 156781 254142001