797158042 has 12 divisors (see below), whose sum is σ = 1199928330. Its totient is φ = 397186776.

The previous prime is 797158031. The next prime is 797158049. The reversal of 797158042 is 240851797.

It can be written as a sum of positive squares in only one way, i.e., 423083761 + 374074281 = 20569^2 + 19341^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 797158042.

It is not an unprimeable number, because it can be changed into a prime (797158049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186384 + ... + 190612.

Almost surely, 2^797158042 is an apocalyptic number.

797158042 is a deficient number, since it is larger than the sum of its proper divisors (402770288).

797158042 is an equidigital number, since it uses as much as digits as its factorization.

797158042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4845 (or 4538 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 797158042 is about 28233.9873556676. The cubic root of 797158042 is about 927.2171957418.

The spelling of 797158042 in words is "seven hundred ninety-seven million, one hundred fifty-eight thousand, forty-two".