42724303731 has 12 divisors (see below), whose sum is σ = 61738703208. Its totient is φ = 28470952224.

The previous prime is 42724303717. The next prime is 42724303771. The reversal of 42724303731 is 13730342724.

42724303731 is a `hidden beast` number, since 42 + 7 + 243 + 0 + 373 + 1 = 666.

42724303731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42724303731 - 2⁷ = 42724303603 is a prime.

It is a super-2 number, since 2×42724303731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42724303771) 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, 970345 + ... + 1013418.

It is an arithmetic number, because the mean of its divisors is an integer number (5144891934).

Almost surely, 2^42724303731 is an apocalyptic number.

42724303731 is a deficient number, since it is larger than the sum of its proper divisors (19014399477).

42724303731 is a wasteful number, since it uses less digits than its factorization.

42724303731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986162 (or 1986159 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The spelling of 42724303731 in words is "forty-two billion, seven hundred twenty-four million, three hundred three thousand, seven hundred thirty-one".