42510939 has 16 divisors (see below), whose sum is σ = 57866400. Its totient is φ = 27754496.

The previous prime is 42510917. The next prime is 42510947. The reversal of 42510939 is 93901524.

It is a cyclic number.

It is not a de Polignac number, because 42510939 - 2⁵ = 42510907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42510959) 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, 29467 + ... + 30875.

It is an arithmetic number, because the mean of its divisors is an integer number (3616650).

Almost surely, 2^42510939 is an apocalyptic number.

42510939 is a deficient number, since it is larger than the sum of its proper divisors (15355461).

42510939 is a wasteful number, since it uses less digits than its factorization.

42510939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 42510939 is about 6520.0413342248. The cubic root of 42510939 is about 349.0065406010.

The spelling of 42510939 in words is "forty-two million, five hundred ten thousand, nine hundred thirty-nine".