157421710 has 16 divisors (see below), whose sum is σ = 289949616. Its totient is φ = 61504128.

The previous prime is 157421681. The next prime is 157421743. The reversal of 157421710 is 17124751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182619 + ... + 183478.

It is an arithmetic number, because the mean of its divisors is an integer number (18121851).

Almost surely, 2^157421710 is an apocalyptic number.

157421710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157421710 is a deficient number, since it is larger than the sum of its proper divisors (132527906).

157421710 is a wasteful number, since it uses less digits than its factorization.

157421710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366147.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 157421710 is about 12546.7808620379. The cubic root of 157421710 is about 539.9516531933.

The spelling of 157421710 in words is "one hundred fifty-seven million, four hundred twenty-one thousand, seven hundred ten".