251065342 has 32 divisors (see below), whose sum is σ = 425493504. Its totient is φ = 110073600.

The previous prime is 251065307. The next prime is 251065357. The reversal of 251065342 is 243560152.

It is a self number, because there is not a number n which added to its sum of digits gives 251065342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372718 + ... + 373390.

It is an arithmetic number, because the mean of its divisors is an integer number (13296672).

Almost surely, 2^251065342 is an apocalyptic number.

251065342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

251065342 is a deficient number, since it is larger than the sum of its proper divisors (174428162).

251065342 is a wasteful number, since it uses less digits than its factorization.

251065342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 251065342 is about 15845.0415587969. The cubic root of 251065342 is about 630.8540880871.

The spelling of 251065342 in words is "two hundred fifty-one million, sixty-five thousand, three hundred forty-two".