157942 has 8 divisors (see below), whose sum is σ = 238896. Its totient is φ = 78312.

The previous prime is 157933. The next prime is 157951. The reversal of 157942 is 249751.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (157933) and next prime (157951).

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

It is a self number, because there is not a number n which added to its sum of digits gives 157942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (29862).

2¹⁵⁷⁹⁴² is an apocalyptic number.

157942 is a deficient number, since it is larger than the sum of its proper divisors (80954).

157942 is a wasteful number, since it uses less digits than its factorization.

157942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its digits is 2520, while the sum is 28.

The square root of 157942 is about 397.4191741726. The cubic root of 157942 is about 54.0545858641.

Subtracting 157942 from its reverse (249751), we obtain a square (91809 = 303²).

The spelling of 157942 in words is "one hundred fifty-seven thousand, nine hundred forty-two".