126995640 has 64 divisors (see below), whose sum is σ = 394135200. Its totient is φ = 32696832.

The previous prime is 126995621. The next prime is 126995657. The reversal of 126995640 is 46599621.

It is a happy number.

It is a super-2 number, since 2×126995640² = 32255785158019200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126995592 and 126995601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14767 + ... + 21726.

Almost surely, 2^126995640 is an apocalyptic number.

126995640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126995640 is an abundant number, since it is smaller than the sum of its proper divisors (267139560).

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

126995640 is a wasteful number, since it uses less digits than its factorization.

126995640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36536 (or 36532 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 126995640 is about 11269.2342242053. The cubic root of 126995640 is about 502.6468173259.

The spelling of 126995640 in words is "one hundred twenty-six million, nine hundred ninety-five thousand, six hundred forty".