126137864 has 8 divisors (see below), whose sum is σ = 236508510. Its totient is φ = 63068928.

The previous prime is 126137863. The next prime is 126137959. The reversal of 126137864 is 468731621.

It can be written as a sum of positive squares in only one way, i.e., 126112900 + 24964 = 11230^2 + 158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (126137861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7883609 + ... + 7883624.

Almost surely, 2^126137864 is an apocalyptic number.

It is an amenable number.

126137864 is a deficient number, since it is larger than the sum of its proper divisors (110370646).

126137864 is a wasteful number, since it uses less digits than its factorization.

126137864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15767239 (or 15767235 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 126137864 is about 11231.1114320890. Note that the first 3 decimals coincide. The cubic root of 126137864 is about 501.5125716400.

The spelling of 126137864 in words is "one hundred twenty-six million, one hundred thirty-seven thousand, eight hundred sixty-four".