42031569 has 16 divisors (see below), whose sum is σ = 56788992. Its totient is φ = 27650688.

The previous prime is 42031543. The next prime is 42031573. The reversal of 42031569 is 96513024.

It is not a de Polignac number, because 42031569 - 2⁵ = 42031537 is a prime.

It is a super-2 number, since 2×42031569² = 3533305585203522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42031369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109552 + ... + 109934.

It is an arithmetic number, because the mean of its divisors is an integer number (3549312).

Almost surely, 2^42031569 is an apocalyptic number.

It is an amenable number.

42031569 is a deficient number, since it is larger than the sum of its proper divisors (14757423).

42031569 is a wasteful number, since it uses less digits than its factorization.

42031569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 42031569 is about 6483.1758421317. The cubic root of 42031569 is about 347.6897336973.

The spelling of 42031569 in words is "forty-two million, thirty-one thousand, five hundred sixty-nine".