126331440 has 40 divisors (see below), whose sum is σ = 391628208. Its totient is φ = 33688320.

The previous prime is 126331423. The next prime is 126331451. The reversal of 126331440 is 44133621.

It is a tau number, because it is divible by the number of its divisors (40).

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 126331440.

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, 262951 + ... + 263430.

Almost surely, 2^126331440 is an apocalyptic number.

126331440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126331440 is an abundant number, since it is smaller than the sum of its proper divisors (265296768).

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

126331440 is a wasteful number, since it uses less digits than its factorization.

126331440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526397 (or 526391 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 126331440 is about 11239.7259753074. The cubic root of 126331440 is about 501.7689873201.

The spelling of 126331440 in words is "one hundred twenty-six million, three hundred thirty-one thousand, four hundred forty".