42231320 has 16 divisors (see below), whose sum is σ = 95020560. Its totient is φ = 16892512.

The previous prime is 42231311. The next prime is 42231323. The reversal of 42231320 is 2313224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231323) 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, 527852 + ... + 527931.

It is an arithmetic number, because the mean of its divisors is an integer number (5938785).

Almost surely, 2^42231320 is an apocalyptic number.

42231320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42231320 is an abundant number, since it is smaller than the sum of its proper divisors (52789240).

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

42231320 is a wasteful number, since it uses less digits than its factorization.

42231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055794 (or 1055790 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42231320 is about 6498.5629180612. The cubic root of 42231320 is about 348.2396508419.

Adding to 42231320 its reverse (2313224), we get a palindrome (44544544).

The spelling of 42231320 in words is "forty-two million, two hundred thirty-one thousand, three hundred twenty".