42758523 has 12 divisors (see below), whose sum is σ = 64050168. Its totient is φ = 28505520.

The previous prime is 42758477. The next prime is 42758549. The reversal of 42758523 is 32585724.

It is not a de Polignac number, because 42758523 - 2²⁰ = 41709947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42758563) 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, 87738 + ... + 88223.

It is an arithmetic number, because the mean of its divisors is an integer number (5337514).

Almost surely, 2^42758523 is an apocalyptic number.

42758523 is a deficient number, since it is larger than the sum of its proper divisors (21291645).

42758523 is an equidigital number, since it uses as much as digits as its factorization.

42758523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175976 (or 175964 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 42758523 is about 6539.0001529286. Note that the first 3 decimals coincide. The cubic root of 42758523 is about 349.6827683380.

The spelling of 42758523 in words is "forty-two million, seven hundred fifty-eight thousand, five hundred twenty-three".