42046913 has 4 divisors (see below), whose sum is σ = 42086340. Its totient is φ = 42007488.

The previous prime is 42046903. The next prime is 42046937. The reversal of 42046913 is 31964024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15904144 + 26142769 = 3988^2 + 5113^2 .

It is a cyclic number.

It is not a de Polignac number, because 42046913 - 2⁸ = 42046657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42046903) 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, 18068 + ... + 20261.

It is an arithmetic number, because the mean of its divisors is an integer number (10521585).

Almost surely, 2^42046913 is an apocalyptic number.

It is an amenable number.

42046913 is a deficient number, since it is larger than the sum of its proper divisors (39427).

42046913 is a wasteful number, since it uses less digits than its factorization.

42046913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39426.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 42046913 is about 6484.3591047998. The cubic root of 42046913 is about 347.7320376317.

The spelling of 42046913 in words is "forty-two million, forty-six thousand, nine hundred thirteen".