42231408 has 20 divisors (see below), whose sum is σ = 109097928. Its totient is φ = 14077120.

The previous prime is 42231403. The next prime is 42231491. The reversal of 42231408 is 80413224.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439863 + ... + 439958.

Almost surely, 2^42231408 is an apocalyptic number.

42231408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42231408 is an abundant number, since it is smaller than the sum of its proper divisors (66866520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42231408 is a wasteful number, since it uses less digits than its factorization.

42231408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879832 (or 879826 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 42231408 is about 6498.5696887854. The cubic root of 42231408 is about 348.2398927245.

The spelling of 42231408 in words is "forty-two million, two hundred thirty-one thousand, four hundred eight".