42605494731 has 12 divisors (see below), whose sum is σ = 61543504152. Its totient is φ = 28402632096.

The previous prime is 42605494717. The next prime is 42605494751. The reversal of 42605494731 is 13749450624.

42605494731 is a `hidden beast` number, since 4 + 2 + 60 + 549 + 47 + 3 + 1 = 666.

It is not a de Polignac number, because 42605494731 - 2⁶ = 42605494667 is a prime.

It is a super-2 number, since 2×42605494731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42605494751) 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, 241420 + ... + 378806.

It is an arithmetic number, because the mean of its divisors is an integer number (5128625346).

Almost surely, 2^42605494731 is an apocalyptic number.

42605494731 is a deficient number, since it is larger than the sum of its proper divisors (18938009421).

42605494731 is a wasteful number, since it uses less digits than its factorization.

42605494731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171850 (or 171847 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 42605494731 in words is "forty-two billion, six hundred five million, four hundred ninety-four thousand, seven hundred thirty-one".