42499023 has 12 divisors (see below), whose sum is σ = 65917080. Its totient is φ = 24285072.

The previous prime is 42499021. The next prime is 42499043. The reversal of 42499023 is 32099424.

It is not a de Polignac number, because 42499023 - 2¹ = 42499021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42499021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144408 + ... + 144701.

It is an arithmetic number, because the mean of its divisors is an integer number (5493090).

Almost surely, 2^42499023 is an apocalyptic number.

42499023 is a deficient number, since it is larger than the sum of its proper divisors (23418057).

42499023 is a wasteful number, since it uses less digits than its factorization.

42499023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289126 (or 289119 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 42499023 is about 6519.1274722926. The cubic root of 42499023 is about 348.9739282062.

The spelling of 42499023 in words is "forty-two million, four hundred ninety-nine thousand, twenty-three".