42906504537 has 24 divisors (see below), whose sum is σ = 66798515784. Its totient is φ = 26382219264.

The previous prime is 42906504533. The next prime is 42906504617. The reversal of 42906504537 is 73540560924.

42906504537 is a `hidden beast` number, since 4 + 2 + 90 + 6 + 504 + 53 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4966866576 + 37939637961 = 70476^2 + 194781^2 .

It is not a de Polignac number, because 42906504537 - 2² = 42906504533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42906504492 and 42906504501.

It is not an unprimeable number, because it can be changed into a prime (42906504533) 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, 8278 + ... + 293055.

It is an arithmetic number, because the mean of its divisors is an integer number (2783271491).

Almost surely, 2^42906504537 is an apocalyptic number.

It is an amenable number.

42906504537 is a deficient number, since it is larger than the sum of its proper divisors (23892011247).

42906504537 is a wasteful number, since it uses less digits than its factorization.

42906504537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302569 (or 302566 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 42906504537 in words is "forty-two billion, nine hundred six million, five hundred four thousand, five hundred thirty-seven".