42400569 has 16 divisors (see below), whose sum is σ = 59553792. Its totient is φ = 26780688.

The previous prime is 42400549. The next prime is 42400573. The reversal of 42400569 is 96500424.

It is not a de Polignac number, because 42400569 - 2²⁰ = 41351993 is a prime.

It is a super-2 number, since 2×42400569² = 3595616503047522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42400549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4512 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (3722112).

Almost surely, 2^42400569 is an apocalyptic number.

It is an amenable number.

42400569 is a deficient number, since it is larger than the sum of its proper divisors (17153223).

42400569 is a wasteful number, since it uses less digits than its factorization.

42400569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 42400569 is about 6511.5719300335. The cubic root of 42400569 is about 348.7042400874.

The spelling of 42400569 in words is "forty-two million, four hundred thousand, five hundred sixty-nine".