757640442 has 16 divisors (see below), whose sum is σ = 1631841120. Its totient is φ = 233120112.

The previous prime is 757640431. The next prime is 757640531. The reversal of 757640442 is 244046757.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 757640442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4856592 + ... + 4856747.

It is an arithmetic number, because the mean of its divisors is an integer number (101990070).

Almost surely, 2^757640442 is an apocalyptic number.

757640442 is an abundant number, since it is smaller than the sum of its proper divisors (874200678).

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

757640442 is a wasteful number, since it uses less digits than its factorization.

757640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713357.

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 757640442 is about 27525.2691539974. The cubic root of 757640442 is about 911.6351240256.

The spelling of 757640442 in words is "seven hundred fifty-seven million, six hundred forty thousand, four hundred forty-two".