42500439 has 6 divisors (see below), whose sum is σ = 61389536. Its totient is φ = 28333620.

The previous prime is 42500431. The next prime is 42500441. The reversal of 42500439 is 93400524.

It is not a de Polignac number, because 42500439 - 2³ = 42500431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42500431) 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, 2361127 + ... + 2361144.

Almost surely, 2^42500439 is an apocalyptic number.

42500439 is a deficient number, since it is larger than the sum of its proper divisors (18889097).

42500439 is a wasteful number, since it uses less digits than its factorization.

42500439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722277 (or 4722274 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42500439 is about 6519.2360748787. The cubic root of 42500439 is about 348.9778039156.

The spelling of 42500439 in words is "forty-two million, five hundred thousand, four hundred thirty-nine".