126744640 has 56 divisors (see below), whose sum is σ = 329257152. Its totient is φ = 46087680.

The previous prime is 126744619. The next prime is 126744659. The reversal of 126744640 is 46447621.

It is a junction number, because it is equal to n+sod(n) for n = 126744596 and 126744605.

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, 14484 + ... + 21523.

It is an arithmetic number, because the mean of its divisors is an integer number (5879592).

Almost surely, 2^126744640 is an apocalyptic number.

126744640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126744640 is an abundant number, since it is smaller than the sum of its proper divisors (202512512).

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

126744640 is a wasteful number, since it uses less digits than its factorization.

126744640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36035 (or 36025 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 126744640 is about 11258.0922007239. The cubic root of 126744640 is about 502.3154475205.

The spelling of 126744640 in words is "one hundred twenty-six million, seven hundred forty-four thousand, six hundred forty".