42313139 has 4 divisors (see below), whose sum is σ = 46159800. Its totient is φ = 38466480.

The previous prime is 42313099. The next prime is 42313147. The reversal of 42313139 is 93131324.

It is a happy number.

42313139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42313139 - 2⁸ = 42312883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42313339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923314 + ... + 1923335.

It is an arithmetic number, because the mean of its divisors is an integer number (11539950).

Almost surely, 2^42313139 is an apocalyptic number.

42313139 is a deficient number, since it is larger than the sum of its proper divisors (3846661).

42313139 is a wasteful number, since it uses less digits than its factorization.

42313139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3846660.

The product of its digits is 1944, while the sum is 26.

The square root of 42313139 is about 6504.8550329734. The cubic root of 42313139 is about 348.4643990401.

The spelling of 42313139 in words is "forty-two million, three hundred thirteen thousand, one hundred thirty-nine".