42975013 has 4 divisors (see below), whose sum is σ = 44456940. Its totient is φ = 41493088.

The previous prime is 42975001. The next prime is 42975029. The reversal of 42975013 is 31057924.

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 33721249 + 9253764 = 5807^2 + 3042^2 .

It is a cyclic number.

It is not a de Polignac number, because 42975013 - 2²⁵ = 9420581 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 (42973013) 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, 740920 + ... + 740977.

It is an arithmetic number, because the mean of its divisors is an integer number (11114235).

Almost surely, 2^42975013 is an apocalyptic number.

It is an amenable number.

42975013 is a deficient number, since it is larger than the sum of its proper divisors (1481927).

42975013 is a wasteful number, since it uses less digits than its factorization.

42975013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481926.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 42975013 is about 6555.5330065526. The cubic root of 42975013 is about 350.2719328844.

The spelling of 42975013 in words is "forty-two million, nine hundred seventy-five thousand, thirteen".