157421410 has 24 divisors (see below), whose sum is σ = 292811868. Its totient is φ = 60933600.

The previous prime is 157421401. The next prime is 157421437. The reversal of 157421410 is 14124751.

It can be written as a sum of positive squares in 2 ways, for example, as 126630009 + 30791401 = 11253^2 + 5549^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1420 + ... + 17800.

Almost surely, 2^157421410 is an apocalyptic number.

157421410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157421410 is a deficient number, since it is larger than the sum of its proper divisors (135390458).

157421410 is a wasteful number, since it uses less digits than its factorization.

157421410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16450 (or 16419 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 157421410 is about 12546.7689067744. The cubic root of 157421410 is about 539.9513101961.

The spelling of 157421410 in words is "one hundred fifty-seven million, four hundred twenty-one thousand, four hundred ten".