42545179 has 2 divisors, whose sum is σ = 42545180. Its totient is φ = 42545178.

The previous prime is 42545171. The next prime is 42545183. The reversal of 42545179 is 97154524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42545179 - 2³ = 42545171 is a prime.

It is a super-2 number, since 2×42545179² = 3620184512284082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42545171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272589 + 21272590.

It is an arithmetic number, because the mean of its divisors is an integer number (21272590).

Almost surely, 2^42545179 is an apocalyptic number.

42545179 is a deficient number, since it is larger than the sum of its proper divisors (1).

42545179 is an equidigital number, since it uses as much as digits as its factorization.

42545179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 42545179 is about 6522.6665559417. Note that the first 3 decimals coincide. The cubic root of 42545179 is about 349.1002167020.

It can be divided in two parts, 42545 and 179, that added together give a palindrome (42724).

The spelling of 42545179 in words is "forty-two million, five hundred forty-five thousand, one hundred seventy-nine".