42107579 has 4 divisors (see below), whose sum is σ = 43465920. Its totient is φ = 40749240.

The previous prime is 42107573. The next prime is 42107581. The reversal of 42107579 is 97570124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42107579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42107573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 679124 + ... + 679185.

It is an arithmetic number, because the mean of its divisors is an integer number (10866480).

Almost surely, 2^42107579 is an apocalyptic number.

42107579 is a deficient number, since it is larger than the sum of its proper divisors (1358341).

42107579 is a wasteful number, since it uses less digits than its factorization.

42107579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358340.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 42107579 is about 6489.0352903956. The cubic root of 42107579 is about 347.8991951609.

The spelling of 42107579 in words is "forty-two million, one hundred seven thousand, five hundred seventy-nine".