126899128 has 32 divisors (see below), whose sum is σ = 247860000. Its totient is φ = 60833920.

The previous prime is 126899117. The next prime is 126899153. The reversal of 126899128 is 821998621.

It is a super-2 number, since 2×126899128² = 32206777374320768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32733 + ... + 36403.

It is an arithmetic number, because the mean of its divisors is an integer number (7745625).

Almost surely, 2^126899128 is an apocalyptic number.

It is an amenable number.

126899128 is a deficient number, since it is larger than the sum of its proper divisors (120960872).

126899128 is a wasteful number, since it uses less digits than its factorization.

126899128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3855 (or 3851 counting only the distinct ones).

The product of its digits is 124416, while the sum is 46.

The square root of 126899128 is about 11264.9513092601. The cubic root of 126899128 is about 502.5194540458.

The spelling of 126899128 in words is "one hundred twenty-six million, eight hundred ninety-nine thousand, one hundred twenty-eight".