157806942 has 8 divisors (see below), whose sum is σ = 315613896. Its totient is φ = 52602312.

The previous prime is 157806941. The next prime is 157806949. The reversal of 157806942 is 249608751.

It is a sphenic number, since it is the product of 3 distinct primes.

157806942 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 157806894 and 157806903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157806941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13150573 + ... + 13150584.

It is an arithmetic number, because the mean of its divisors is an integer number (39451737).

Almost surely, 2^157806942 is an apocalyptic number.

157806942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

157806942 is a wasteful number, since it uses less digits than its factorization.

157806942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26301162.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 157806942 is about 12562.1233077852. The cubic root of 157806942 is about 540.3917390666.

It can be divided in two parts, 15780 and 6942, that added together give a palindrome (22722).

The spelling of 157806942 in words is "one hundred fifty-seven million, eight hundred six thousand, nine hundred forty-two".