42906679 has 4 divisors (see below), whose sum is σ = 43307784. Its totient is φ = 42505576.

The previous prime is 42906667. The next prime is 42906683. The reversal of 42906679 is 97660924.

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

It is a cyclic number.

It is not a de Polignac number, because 42906679 - 2⁷ = 42906551 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 (42906179) 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, 200392 + ... + 200605.

It is an arithmetic number, because the mean of its divisors is an integer number (10826946).

Almost surely, 2^42906679 is an apocalyptic number.

42906679 is a deficient number, since it is larger than the sum of its proper divisors (401105).

42906679 is a wasteful number, since it uses less digits than its factorization.

42906679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401104.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 42906679 is about 6550.3189998656. The cubic root of 42906679 is about 350.0861801388.

The spelling of 42906679 in words is "forty-two million, nine hundred six thousand, six hundred seventy-nine".