126921160 has 16 divisors (see below), whose sum is σ = 285572700. Its totient is φ = 50768448.

The previous prime is 126921097. The next prime is 126921173. The reversal of 126921160 is 61129621.

It can be written as a sum of positive squares in 2 ways, for example, as 110712484 + 16208676 = 10522^2 + 4026^2 .

It is a super-2 number, since 2×126921160² = 32217961711491200, which contains 22 as substring.

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, 1586475 + ... + 1586554.

Almost surely, 2^126921160 is an apocalyptic number.

126921160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126921160 is an abundant number, since it is smaller than the sum of its proper divisors (158651540).

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

126921160 is a wasteful number, since it uses less digits than its factorization.

126921160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173040 (or 3173036 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 126921160 is about 11265.9291671837. The cubic root of 126921160 is about 502.5485345397.

The spelling of 126921160 in words is "one hundred twenty-six million, nine hundred twenty-one thousand, one hundred sixty".