42294945591 has 12 divisors (see below), whose sum is σ = 61110457200. Its totient is φ = 28188434400.

The previous prime is 42294945557. The next prime is 42294945593. The reversal of 42294945591 is 19554949224.

42294945591 is a `hidden beast` number, since 4 + 2 + 2 + 9 + 4 + 9 + 45 + 591 = 666.

It is not a de Polignac number, because 42294945591 - 2⁷ = 42294945463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42294945593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650235 + ... + 712316.

It is an arithmetic number, because the mean of its divisors is an integer number (5092538100).

Almost surely, 2^42294945591 is an apocalyptic number.

42294945591 is a deficient number, since it is larger than the sum of its proper divisors (18815511609).

42294945591 is a wasteful number, since it uses less digits than its factorization.

42294945591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366006 (or 1366003 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 42294945591 in words is "forty-two billion, two hundred ninety-four million, nine hundred forty-five thousand, five hundred ninety-one".