42553839 has 16 divisors (see below), whose sum is σ = 60210432. Its totient is φ = 26640768.

The previous prime is 42553829. The next prime is 42553843. The reversal of 42553839 is 93835524.

It is not a de Polignac number, because 42553839 - 2⁵ = 42553807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42553797 and 42553806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42553829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37332 + ... + 38454.

It is an arithmetic number, because the mean of its divisors is an integer number (3763152).

Almost surely, 2^42553839 is an apocalyptic number.

42553839 is a deficient number, since it is larger than the sum of its proper divisors (17656593).

42553839 is a wasteful number, since it uses less digits than its factorization.

42553839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its digits is 129600, while the sum is 39.

The square root of 42553839 is about 6523.3303610962. The cubic root of 42553839 is about 349.1239013501.

The spelling of 42553839 in words is "forty-two million, five hundred fifty-three thousand, eight hundred thirty-nine".