42939178874 has 4 divisors (see below), whose sum is σ = 64408768314. Its totient is φ = 21469589436.

The previous prime is 42939178871. The next prime is 42939178903. The reversal of 42939178874 is 47887193924.

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

It can be written as a sum of positive squares in only one way, i.e., 24017250625 + 18921928249 = 154975^2 + 137557^2 .

It is not an unprimeable number, because it can be changed into a prime (42939178871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10734794717 + ... + 10734794720.

Almost surely, 2^42939178874 is an apocalyptic number.

42939178874 is a deficient number, since it is larger than the sum of its proper divisors (21469589440).

42939178874 is a wasteful number, since it uses less digits than its factorization.

42939178874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21469589439.

The product of its digits is 24385536, while the sum is 62.

The spelling of 42939178874 in words is "forty-two billion, nine hundred thirty-nine million, one hundred seventy-eight thousand, eight hundred seventy-four".