254568642 has 16 divisors (see below), whose sum is σ = 539086752. Its totient is φ = 79864640.

The previous prime is 254568619. The next prime is 254568679. The reversal of 254568642 is 246865452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 254568594 and 254568603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247784 + ... + 1247987.

It is an arithmetic number, because the mean of its divisors is an integer number (33692922).

Almost surely, 2^254568642 is an apocalyptic number.

254568642 is an abundant number, since it is smaller than the sum of its proper divisors (284518110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

254568642 is a wasteful number, since it uses less digits than its factorization.

254568642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495793.

The product of its digits is 460800, while the sum is 42.

The square root of 254568642 is about 15955.2073631150. The cubic root of 254568642 is about 633.7748025104.

The spelling of 254568642 in words is "two hundred fifty-four million, five hundred sixty-eight thousand, six hundred forty-two".