42931719 has 6 divisors (see below), whose sum is σ = 62012496. Its totient is φ = 28621140.

The previous prime is 42931711. The next prime is 42931723. The reversal of 42931719 is 91713924.

It is not a de Polignac number, because 42931719 - 2³ = 42931711 is a prime.

It is a super-2 number, since 2×42931719² = 3686264992589922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42931711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2385087 + ... + 2385104.

It is an arithmetic number, because the mean of its divisors is an integer number (10335416).

Almost surely, 2^42931719 is an apocalyptic number.

42931719 is a deficient number, since it is larger than the sum of its proper divisors (19080777).

42931719 is a wasteful number, since it uses less digits than its factorization.

42931719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770197 (or 4770194 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 42931719 is about 6552.2300783779. The cubic root of 42931719 is about 350.1542694077.

The spelling of 42931719 in words is "forty-two million, nine hundred thirty-one thousand, seven hundred nineteen".