42320131 has 8 divisors (see below), whose sum is σ = 48612960. Its totient is φ = 36089088.

The previous prime is 42320099. The next prime is 42320141. The reversal of 42320131 is 13102324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42320131 - 2⁵ = 42320099 is a prime.

It is a super-2 number, since 2×42320131² = 3581986975714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42320141) 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, 13966 + ... + 16723.

It is an arithmetic number, because the mean of its divisors is an integer number (6076620).

Almost surely, 2^42320131 is an apocalyptic number.

42320131 is a deficient number, since it is larger than the sum of its proper divisors (6292829).

42320131 is a wasteful number, since it uses less digits than its factorization.

42320131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30893.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42320131 is about 6505.3924554941. The cubic root of 42320131 is about 348.4835918877.

Adding to 42320131 its reverse (13102324), we get a palindrome (55422455).

The spelling of 42320131 in words is "forty-two million, three hundred twenty thousand, one hundred thirty-one".