126992100 has 36 divisors (see below), whose sum is σ = 367431344. Its totient is φ = 33864480.

The previous prime is 126992077. The next prime is 126992123. The reversal of 126992100 is 1299621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (126992077) and next prime (126992123).

It is a super-2 number, since 2×126992100² = 32253986924820000, which contains 22 as substring.

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

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, 211354 + ... + 211953.

Almost surely, 2^126992100 is an apocalyptic number.

126992100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126992100 is an abundant number, since it is smaller than the sum of its proper divisors (240439244).

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

126992100 is a wasteful number, since it uses less digits than its factorization.

126992100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423324 (or 423317 counting only the distinct ones).

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

The square root of 126992100 is about 11269.0771583125. The cubic root of 126992100 is about 502.6421468604.

The spelling of 126992100 in words is "one hundred twenty-six million, nine hundred ninety-two thousand, one hundred".