157639142 has 8 divisors (see below), whose sum is σ = 237448800. Its totient is φ = 78489544.

The previous prime is 157639133. The next prime is 157639177. The reversal of 157639142 is 241936751.

157639142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 157639096 and 157639105.

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, 164417 + ... + 165372.

It is an arithmetic number, because the mean of its divisors is an integer number (29681100).

Almost surely, 2^157639142 is an apocalyptic number.

157639142 is a deficient number, since it is larger than the sum of its proper divisors (79809658).

157639142 is a wasteful number, since it uses less digits than its factorization.

157639142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330030.

The product of its digits is 45360, while the sum is 38.

The square root of 157639142 is about 12555.4427241734. The cubic root of 157639142 is about 540.2001338651.

The spelling of 157639142 in words is "one hundred fifty-seven million, six hundred thirty-nine thousand, one hundred forty-two".