42372487 has 4 divisors (see below), whose sum is σ = 42388920. Its totient is φ = 42356056.

The previous prime is 42372479. The next prime is 42372503. The reversal of 42372487 is 78427324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42372487 - 2³ = 42372479 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42372457) 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, 3412 + ... + 9817.

It is an arithmetic number, because the mean of its divisors is an integer number (10597230).

Almost surely, 2^42372487 is an apocalyptic number.

42372487 is a deficient number, since it is larger than the sum of its proper divisors (16433).

42372487 is a wasteful number, since it uses less digits than its factorization.

42372487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16432.

The product of its digits is 75264, while the sum is 37.

The square root of 42372487 is about 6509.4152579168. The cubic root of 42372487 is about 348.6272405304.

It can be divided in two parts, 4237 and 2487, that added together give a square (6724 = 82²).

The spelling of 42372487 in words is "forty-two million, three hundred seventy-two thousand, four hundred eighty-seven".