42979945438 has 8 divisors (see below), whose sum is σ = 64548255888. Its totient is φ = 21463860144.

The previous prime is 42979945427. The next prime is 42979945457. The reversal of 42979945438 is 83454997924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42979945438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13054231 + ... + 13057522.

It is an arithmetic number, because the mean of its divisors is an integer number (8068531986).

Almost surely, 2^42979945438 is an apocalyptic number.

42979945438 is a deficient number, since it is larger than the sum of its proper divisors (21568310450).

42979945438 is a wasteful number, since it uses less digits than its factorization.

42979945438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26112578.

The product of its digits is 78382080, while the sum is 64.

The spelling of 42979945438 in words is "forty-two billion, nine hundred seventy-nine million, nine hundred forty-five thousand, four hundred thirty-eight".