39145542 has 16 divisors (see below), whose sum is σ = 78811392. Its totient is φ = 12961800.

The previous prime is 39145537. The next prime is 39145549. The reversal of 39145542 is 24554193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39145549) 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, 20698 + ... + 22509.

It is an arithmetic number, because the mean of its divisors is an integer number (4925712).

Almost surely, 2^39145542 is an apocalyptic number.

39145542 is an abundant number, since it is smaller than the sum of its proper divisors (39665850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39145542 is a wasteful number, since it uses less digits than its factorization.

39145542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43363.

The product of its digits is 21600, while the sum is 33.

The square root of 39145542 is about 6256.6398330094. The cubic root of 39145542 is about 339.5424699404.

The spelling of 39145542 in words is "thirty-nine million, one hundred forty-five thousand, five hundred forty-two".