42116669 has 16 divisors (see below), whose sum is σ = 49449600. Its totient is φ = 35126784.

The previous prime is 42116647. The next prime is 42116681. The reversal of 42116669 is 96661124.

It is not a de Polignac number, because 42116669 - 2²⁴ = 25339453 is a prime.

It is a super-2 number, since 2×42116669² = 3547627615311122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42116069) 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, 41237 + ... + 42245.

It is an arithmetic number, because the mean of its divisors is an integer number (3090600).

Almost surely, 2^42116669 is an apocalyptic number.

It is an amenable number.

42116669 is a deficient number, since it is larger than the sum of its proper divisors (7332931).

42116669 is a wasteful number, since it uses less digits than its factorization.

42116669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its digits is 15552, while the sum is 35.

The square root of 42116669 is about 6489.7356648788. The cubic root of 42116669 is about 347.9242276786.

The spelling of 42116669 in words is "forty-two million, one hundred sixteen thousand, six hundred sixty-nine".