42736438431 has 48 divisors (see below), whose sum is σ = 67932472608. Its totient is φ = 26755660800.

The previous prime is 42736438373. The next prime is 42736438441. The reversal of 42736438431 is 13483463724.

It is not a de Polignac number, because 42736438431 - 2²² = 42732244127 is a prime.

It is a super-2 number, since 2×42736438431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42736438441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1893171 + ... + 1915611.

It is an arithmetic number, because the mean of its divisors is an integer number (1415259846).

Almost surely, 2^42736438431 is an apocalyptic number.

42736438431 is a deficient number, since it is larger than the sum of its proper divisors (25196034177).

42736438431 is a wasteful number, since it uses less digits than its factorization.

42736438431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22934 (or 22922 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 45.

The spelling of 42736438431 in words is "forty-two billion, seven hundred thirty-six million, four hundred thirty-eight thousand, four hundred thirty-one".