126502440 has 64 divisors (see below), whose sum is σ = 401837760. Its totient is φ = 31749120.

The previous prime is 126502433. The next prime is 126502469. The reversal of 126502440 is 44205621.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 126502440.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 28966 + ... + 33045.

It is an arithmetic number, because the mean of its divisors is an integer number (6278715).

Almost surely, 2^126502440 is an apocalyptic number.

126502440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126502440 is an abundant number, since it is smaller than the sum of its proper divisors (275335320).

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

126502440 is a wasteful number, since it uses less digits than its factorization.

126502440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62042 (or 62038 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 126502440 is about 11247.3303499097. The cubic root of 126502440 is about 501.9952804538.

The spelling of 126502440 in words is "one hundred twenty-six million, five hundred two thousand, four hundred forty".