157042 has 8 divisors (see below), whose sum is σ = 237276. Its totient is φ = 77952.

The previous prime is 157037. The next prime is 157049. The reversal of 157042 is 240751.

157042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 145161 + 11881 = 381^2 + 109^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298 + ... + 634.

2¹⁵⁷⁰⁴² is an apocalyptic number.

157042 is a deficient number, since it is larger than the sum of its proper divisors (80234).

157042 is a wasteful number, since it uses less digits than its factorization.

157042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 157042 is about 396.2852507980. The cubic root of 157042 is about 53.9517172444.

Adding to 157042 its reverse (240751), we get a palindrome (397793).

The spelling of 157042 in words is "one hundred fifty-seven thousand, forty-two".