255342642 has 16 divisors (see below), whose sum is σ = 532889280. Its totient is φ = 81413552.

The previous prime is 255342599. The next prime is 255342677. The reversal of 255342642 is 246243552.

It is a happy number.

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, 925017 + ... + 925292.

It is an arithmetic number, because the mean of its divisors is an integer number (33305580).

Almost surely, 2^255342642 is an apocalyptic number.

255342642 is an abundant number, since it is smaller than the sum of its proper divisors (277546638).

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

255342642 is a wasteful number, since it uses less digits than its factorization.

255342642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850337.

The product of its digits is 57600, while the sum is 33.

The square root of 255342642 is about 15979.4443582998. Note that the first 3 decimals coincide. The cubic root of 255342642 is about 634.4164701533.

The spelling of 255342642 in words is "two hundred fifty-five million, three hundred forty-two thousand, six hundred forty-two".