42699679 has 8 divisors (see below), whose sum is σ = 48084480. Its totient is φ = 37565400.

The previous prime is 42699677. The next prime is 42699689. The reversal of 42699679 is 97699624.

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 42699679 - 2¹ = 42699677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42699677) 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, 62269 + ... + 62950.

It is an arithmetic number, because the mean of its divisors is an integer number (6010560).

Almost surely, 2^42699679 is an apocalyptic number.

42699679 is a deficient number, since it is larger than the sum of its proper divisors (5384801).

42699679 is a wasteful number, since it uses less digits than its factorization.

42699679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125261.

The product of its digits is 1469664, while the sum is 52.

The square root of 42699679 is about 6534.4991391843. The cubic root of 42699679 is about 349.5222843160.

Subtracting 42699679 from its reverse (97699624), we obtain a palindrome (54999945).

The spelling of 42699679 in words is "forty-two million, six hundred ninety-nine thousand, six hundred seventy-nine".