157121006 has 16 divisors (see below), whose sum is σ = 270121824. Its totient is φ = 67144704.

The previous prime is 157120961. The next prime is 157121033. The reversal of 157121006 is 600121751.

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, 10955 + ... + 20838.

It is an arithmetic number, because the mean of its divisors is an integer number (16882614).

Almost surely, 2^157121006 is an apocalyptic number.

157121006 is a deficient number, since it is larger than the sum of its proper divisors (113000818).

157121006 is a wasteful number, since it uses less digits than its factorization.

157121006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32155.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 157121006 is about 12534.7918211672. The cubic root of 157121006 is about 539.6076322101.

Adding to 157121006 its reverse (600121751), we get a palindrome (757242757).

The spelling of 157121006 in words is "one hundred fifty-seven million, one hundred twenty-one thousand, six".