42299231 has 16 divisors (see below), whose sum is σ = 47845056. Its totient is φ = 37103616.

The previous prime is 42299219. The next prime is 42299237. The reversal of 42299231 is 13299224.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42299231 is a prime.

It is a super-2 number, since 2×42299231² = 3578449886382722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42299237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57341 + ... + 58073.

It is an arithmetic number, because the mean of its divisors is an integer number (2990316).

Almost surely, 2^42299231 is an apocalyptic number.

42299231 is a deficient number, since it is larger than the sum of its proper divisors (5545825).

42299231 is a wasteful number, since it uses less digits than its factorization.

42299231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 7776, while the sum is 32.

The square root of 42299231 is about 6503.7858974600. The cubic root of 42299231 is about 348.4262156762.

The spelling of 42299231 in words is "forty-two million, two hundred ninety-nine thousand, two hundred thirty-one".