42571539 has 6 divisors (see below), whose sum is σ = 61492236. Its totient is φ = 28381020.

The previous prime is 42571531. The next prime is 42571541. The reversal of 42571539 is 93517524.

It is not a de Polignac number, because 42571539 - 2³ = 42571531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42571531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2365077 + ... + 2365094.

It is an arithmetic number, because the mean of its divisors is an integer number (10248706).

Almost surely, 2^42571539 is an apocalyptic number.

42571539 is a deficient number, since it is larger than the sum of its proper divisors (18920697).

42571539 is a wasteful number, since it uses less digits than its factorization.

42571539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730177 (or 4730174 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 42571539 is about 6524.6868890392. The cubic root of 42571539 is about 349.1722999327.

The spelling of 42571539 in words is "forty-two million, five hundred seventy-one thousand, five hundred thirty-nine".