42569693 has 4 divisors (see below), whose sum is σ = 42589980. Its totient is φ = 42549408.

The previous prime is 42569689. The next prime is 42569701. The reversal of 42569693 is 39696524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17749369 + 24820324 = 4213^2 + 4982^2 .

It is a cyclic number.

It is not a de Polignac number, because 42569693 - 2² = 42569689 is a prime.

It is a super-2 number, since 2×42569693² = 3624357524228498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42569663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578 + ... + 11331.

It is an arithmetic number, because the mean of its divisors is an integer number (10647495).

Almost surely, 2^42569693 is an apocalyptic number.

It is an amenable number.

42569693 is a deficient number, since it is larger than the sum of its proper divisors (20287).

42569693 is a wasteful number, since it uses less digits than its factorization.

42569693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20286.

The product of its digits is 349920, while the sum is 44.

The square root of 42569693 is about 6524.5454247786. The cubic root of 42569693 is about 349.1672528880.

The spelling of 42569693 in words is "forty-two million, five hundred sixty-nine thousand, six hundred ninety-three".