42013993 has 8 divisors (see below), whose sum is σ = 48261312. Its totient is φ = 35828016.

The previous prime is 42013991. The next prime is 42013999. The reversal of 42013993 is 39931024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42013993 - 2¹ = 42013991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13855 + ... + 16612.

It is an arithmetic number, because the mean of its divisors is an integer number (6032664).

Almost surely, 2^42013993 is an apocalyptic number.

It is an amenable number.

42013993 is a deficient number, since it is larger than the sum of its proper divisors (6247319).

42013993 is a wasteful number, since it uses less digits than its factorization.

42013993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30671.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 42013993 is about 6481.8201918905. The cubic root of 42013993 is about 347.6412634094.

The spelling of 42013993 in words is "forty-two million, thirteen thousand, nine hundred ninety-three".