42539469 has 8 divisors (see below), whose sum is σ = 64822080. Its totient is φ = 24308256.

The previous prime is 42539467. The next prime is 42539473. The reversal of 42539469 is 96493524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42539469 - 2¹ = 42539467 is a prime.

It is a super-2 number, since 2×42539469² = 3619212845603922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 42539469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42539467) 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, 1012824 + ... + 1012865.

It is an arithmetic number, because the mean of its divisors is an integer number (8102760).

Almost surely, 2^42539469 is an apocalyptic number.

It is an amenable number.

42539469 is a deficient number, since it is larger than the sum of its proper divisors (22282611).

42539469 is a wasteful number, since it uses less digits than its factorization.

42539469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025699.

The product of its digits is 233280, while the sum is 42.

The square root of 42539469 is about 6522.2288368318. The cubic root of 42539469 is about 349.0845983917.

The spelling of 42539469 in words is "forty-two million, five hundred thirty-nine thousand, four hundred sixty-nine".