126500440 has 32 divisors (see below), whose sum is σ = 310502160. Its totient is φ = 46000000.

The previous prime is 126500419. The next prime is 126500441. The reversal of 126500440 is 44005621.

It is a super-2 number, since 2×126500440² = 32004722640387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126500441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143311 + ... + 144190.

Almost surely, 2^126500440 is an apocalyptic number.

126500440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126500440 is an abundant number, since it is smaller than the sum of its proper divisors (184001720).

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

126500440 is a wasteful number, since it uses less digits than its factorization.

126500440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287523 (or 287519 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 126500440 is about 11247.2414395709. The cubic root of 126500440 is about 501.9926349295.

The spelling of 126500440 in words is "one hundred twenty-six million, five hundred thousand, four hundred forty".