42011579 has 2 divisors, whose sum is σ = 42011580. Its totient is φ = 42011578.

The previous prime is 42011551. The next prime is 42011587. The reversal of 42011579 is 97511024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42011579 - 2⁸ = 42011323 is a prime.

It is a Chen prime.

It is equal to p_2548271 and since 42011579 and 2548271 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42011509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21005789 + 21005790.

It is an arithmetic number, because the mean of its divisors is an integer number (21005790).

Almost surely, 2^42011579 is an apocalyptic number.

42011579 is a deficient number, since it is larger than the sum of its proper divisors (1).

42011579 is an equidigital number, since it uses as much as digits as its factorization.

42011579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 42011579 is about 6481.6339760897. The cubic root of 42011579 is about 347.6346051349.

The spelling of 42011579 in words is "forty-two million, eleven thousand, five hundred seventy-nine".