42431843 has 16 divisors (see below), whose sum is σ = 45480960. Its totient is φ = 39513600.

The previous prime is 42431833. The next prime is 42431867. The reversal of 42431843 is 34813424.

It is a cyclic number.

It is not a de Polignac number, because 42431843 - 2²⁴ = 25654627 is a prime.

It is a super-2 number, since 2×42431843² = 3600922600753298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42431833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150863 + ... + 151143.

It is an arithmetic number, because the mean of its divisors is an integer number (2842560).

Almost surely, 2^42431843 is an apocalyptic number.

42431843 is a deficient number, since it is larger than the sum of its proper divisors (3049117).

42431843 is a wasteful number, since it uses less digits than its factorization.

42431843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its digits is 9216, while the sum is 29.

The square root of 42431843 is about 6513.9729044570. The cubic root of 42431843 is about 348.7899519584.

The spelling of 42431843 in words is "forty-two million, four hundred thirty-one thousand, eight hundred forty-three".