42831739 has 8 divisors (see below), whose sum is σ = 44300672. Its totient is φ = 41368320.

The previous prime is 42831713. The next prime is 42831751. The reversal of 42831739 is 93713824.

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

It is a cyclic number.

It is not a de Polignac number, because 42831739 - 2¹⁵ = 42798971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42831698 and 42831707.

It is not an unprimeable number, because it can be changed into a prime (42831709) 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, 19837 + ... + 21889.

It is an arithmetic number, because the mean of its divisors is an integer number (5537584).

Almost surely, 2^42831739 is an apocalyptic number.

42831739 is a deficient number, since it is larger than the sum of its proper divisors (1468933).

42831739 is a wasteful number, since it uses less digits than its factorization.

42831739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757.

The product of its digits is 36288, while the sum is 37.

The square root of 42831739 is about 6544.5961678319. The cubic root of 42831739 is about 349.8822433787.

The spelling of 42831739 in words is "forty-two million, eight hundred thirty-one thousand, seven hundred thirty-nine".