42979846 has 16 divisors (see below), whose sum is σ = 79347744. Its totient is φ = 17002944.

The previous prime is 42979837. The next prime is 42979861. The reversal of 42979846 is 64897924.

It is a self number, because there is not a number n which added to its sum of digits gives 42979846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117895 + ... + 118258.

It is an arithmetic number, because the mean of its divisors is an integer number (4959234).

Almost surely, 2^42979846 is an apocalyptic number.

42979846 is a deficient number, since it is larger than the sum of its proper divisors (36367898).

42979846 is a wasteful number, since it uses less digits than its factorization.

42979846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236175.

The product of its digits is 870912, while the sum is 49.

The square root of 42979846 is about 6555.9016161013. The cubic root of 42979846 is about 350.2850630010.

The spelling of 42979846 in words is "forty-two million, nine hundred seventy-nine thousand, eight hundred forty-six".