157842220 has 12 divisors (see below), whose sum is σ = 331468704. Its totient is φ = 63136880.

The previous prime is 157842211. The next prime is 157842239. The reversal of 157842220 is 22248751.

It is a happy number.

157842220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3946036 + ... + 3946075.

It is an arithmetic number, because the mean of its divisors is an integer number (27622392).

Almost surely, 2^157842220 is an apocalyptic number.

157842220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157842220 is an abundant number, since it is smaller than the sum of its proper divisors (173626484).

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

157842220 is a wasteful number, since it uses less digits than its factorization.

157842220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892120 (or 7892118 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 157842220 is about 12563.5273709257. The cubic root of 157842220 is about 540.4320045520.

The spelling of 157842220 in words is "one hundred fifty-seven million, eight hundred forty-two thousand, two hundred twenty".