42305569 has 2 divisors, whose sum is σ = 42305570. Its totient is φ = 42305568.

The previous prime is 42305551. The next prime is 42305581. The reversal of 42305569 is 96550324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34398225 + 7907344 = 5865^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 42305569 - 2¹⁵ = 42272801 is a prime.

It is a super-2 number, since 2×42305569² = 3579522336827522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42309569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21152784 + 21152785.

It is an arithmetic number, because the mean of its divisors is an integer number (21152785).

Almost surely, 2^42305569 is an apocalyptic number.

It is an amenable number.

42305569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42305569 is an equidigital number, since it uses as much as digits as its factorization.

42305569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 42305569 is about 6504.2731338713. The cubic root of 42305569 is about 348.4436172145.

The spelling of 42305569 in words is "forty-two million, three hundred five thousand, five hundred sixty-nine".