42015569 has 8 divisors (see below), whose sum is σ = 42438528. Its totient is φ = 41595120.

The previous prime is 42015563. The next prime is 42015581. The reversal of 42015569 is 96551024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42015569 - 2²⁰ = 40966993 is a prime.

It is a super-2 number, since 2×42015569² = 3530616076787522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42015563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52994 + ... + 53780.

It is an arithmetic number, because the mean of its divisors is an integer number (5304816).

Almost surely, 2^42015569 is an apocalyptic number.

It is an amenable number.

42015569 is a deficient number, since it is larger than the sum of its proper divisors (422959).

42015569 is a wasteful number, since it uses less digits than its factorization.

42015569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 42015569 is about 6481.9417615403. The cubic root of 42015569 is about 347.6456101816.

The spelling of 42015569 in words is "forty-two million, fifteen thousand, five hundred sixty-nine".