126992129 has 8 divisors (see below), whose sum is σ = 141916320. Its totient is φ = 112631200.

The previous prime is 126992123. The next prime is 126992137. The reversal of 126992129 is 921299621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126992129 - 2²⁰ = 125943553 is a prime.

It is a super-2 number, since 2×126992129² = 32254001655905282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126992123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140339 + ... + 141240.

It is an arithmetic number, because the mean of its divisors is an integer number (17739540).

Almost surely, 2^126992129 is an apocalyptic number.

It is an amenable number.

126992129 is a deficient number, since it is larger than the sum of its proper divisors (14924191).

126992129 is a wasteful number, since it uses less digits than its factorization.

126992129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281631.

The product of its digits is 34992, while the sum is 41.

The square root of 126992129 is about 11269.0784450194. The cubic root of 126992129 is about 502.6421851216.

The spelling of 126992129 in words is "one hundred twenty-six million, nine hundred ninety-two thousand, one hundred twenty-nine".