42294569 has 2 divisors, whose sum is σ = 42294570. Its totient is φ = 42294568.

The previous prime is 42294523. The next prime is 42294607. The reversal of 42294569 is 96549224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38588944 + 3705625 = 6212^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 42294569 - 2¹² = 42290473 is a prime.

It is a super-2 number, since 2×42294569² = 3577661133791522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42294869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21147284 + 21147285.

It is an arithmetic number, because the mean of its divisors is an integer number (21147285).

Almost surely, 2^42294569 is an apocalyptic number.

It is an amenable number.

42294569 is a deficient number, since it is larger than the sum of its proper divisors (1).

42294569 is an equidigital number, since it uses as much as digits as its factorization.

42294569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 42294569 is about 6503.4274809519. The cubic root of 42294569 is about 348.4134146342.

The spelling of 42294569 in words is "forty-two million, two hundred ninety-four thousand, five hundred sixty-nine".