42388959 has 4 divisors (see below), whose sum is σ = 56518616. Its totient is φ = 28259304.

The previous prime is 42388949. The next prime is 42388987. The reversal of 42388959 is 95988324.

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

It is not a de Polignac number, because 42388959 - 2¹⁶ = 42323423 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 (42388909) 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, 7064824 + ... + 7064829.

It is an arithmetic number, because the mean of its divisors is an integer number (14129654).

Almost surely, 2^42388959 is an apocalyptic number.

42388959 is a deficient number, since it is larger than the sum of its proper divisors (14129657).

42388959 is a wasteful number, since it uses less digits than its factorization.

42388959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14129656.

The product of its digits is 622080, while the sum is 48.

The square root of 42388959 is about 6510.6803791923. The cubic root of 42388959 is about 348.6724101231.

The spelling of 42388959 in words is "forty-two million, three hundred eighty-eight thousand, nine hundred fifty-nine".