42113569 has 2 divisors, whose sum is σ = 42113570. Its totient is φ = 42113568.

The previous prime is 42113549. The next prime is 42113609. The reversal of 42113569 is 96531124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42081169 + 32400 = 6487^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 42113569 - 2²³ = 33724961 is a prime.

It is a super-2 number, since 2×42113569² = 3547105387835522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42113569.

It is not a weakly prime, because it can be changed into another prime (42113549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056784 + 21056785.

It is an arithmetic number, because the mean of its divisors is an integer number (21056785).

Almost surely, 2^42113569 is an apocalyptic number.

It is an amenable number.

42113569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42113569 is an equidigital number, since it uses as much as digits as its factorization.

42113569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 42113569 is about 6489.4968217883. The cubic root of 42113569 is about 347.9156911411.

The spelling of 42113569 in words is "forty-two million, one hundred thirteen thousand, five hundred sixty-nine".