42426543231 has 8 divisors (see below), whose sum is σ = 62854138160. Its totient is φ = 28284362136.

The previous prime is 42426543209. The next prime is 42426543251. The reversal of 42426543231 is 13234562424.

42426543231 is a `hidden beast` number, since 42 + 42 + 6 + 543 + 2 + 31 = 666.

It is not a de Polignac number, because 42426543231 - 2²¹ = 42424446079 is a prime.

It is a super-2 number, since 2×42426543231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42426543251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785676700 + ... + 785676753.

It is an arithmetic number, because the mean of its divisors is an integer number (7856767270).

Almost surely, 2^42426543231 is an apocalyptic number.

42426543231 is a deficient number, since it is larger than the sum of its proper divisors (20427594929).

42426543231 is a wasteful number, since it uses less digits than its factorization.

42426543231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571353462 (or 1571353456 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The spelling of 42426543231 in words is "forty-two billion, four hundred twenty-six million, five hundred forty-three thousand, two hundred thirty-one".