126912900 has 36 divisors (see below), whose sum is σ = 367202192. Its totient is φ = 33843360.

The previous prime is 126912887. The next prime is 126912901. The reversal of 126912900 is 9219621.

It is a happy number.

It is a super-2 number, since 2×126912900² = 32213768372820000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (126912901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211222 + ... + 211821.

Almost surely, 2^126912900 is an apocalyptic number.

126912900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126912900 is an abundant number, since it is smaller than the sum of its proper divisors (240289292).

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

126912900 is a wasteful number, since it uses less digits than its factorization.

126912900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423060 (or 423053 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 126912900 is about 11265.5625691751. The cubic root of 126912900 is about 502.5376323887.

The spelling of 126912900 in words is "one hundred twenty-six million, nine hundred twelve thousand, nine hundred".