126565641 has 24 divisors (see below), whose sum is σ = 192146240. Its totient is φ = 80178336.

The previous prime is 126565639. The next prime is 126565687. The reversal of 126565641 is 146565621.

126565641 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 6 + 5 + 641 = 666.

It is not a de Polignac number, because 126565641 - 2¹ = 126565639 is a prime.

It is a super-2 number, since 2×126565641² = 32037722963481762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126565596 and 126565605.

It is not an unprimeable number, because it can be changed into a prime (126565601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9900 + ... + 18738.

Almost surely, 2^126565641 is an apocalyptic number.

It is an amenable number.

126565641 is a deficient number, since it is larger than the sum of its proper divisors (65580599).

126565641 is a wasteful number, since it uses less digits than its factorization.

126565641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925 (or 8922 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 126565641 is about 11250.1395991339. The cubic root of 126565641 is about 502.0788659868.

The spelling of 126565641 in words is "one hundred twenty-six million, five hundred sixty-five thousand, six hundred forty-one".