42539320 has 16 divisors (see below), whose sum is σ = 95713560. Its totient is φ = 17015712.

The previous prime is 42539293. The next prime is 42539327. The reversal of 42539320 is 2393524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42539327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531702 + ... + 531781.

Almost surely, 2^42539320 is an apocalyptic number.

42539320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42539320 is an abundant number, since it is smaller than the sum of its proper divisors (53174240).

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

42539320 is a wasteful number, since it uses less digits than its factorization.

42539320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063494 (or 1063490 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 42539320 is about 6522.2174143461. The cubic root of 42539320 is about 349.0841908199.

The spelling of 42539320 in words is "forty-two million, five hundred thirty-nine thousand, three hundred twenty".