42786938 has 8 divisors (see below), whose sum is σ = 64228032. Its totient is φ = 21377596.

The previous prime is 42786929. The next prime is 42786941. The reversal of 42786938 is 83968724.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42786892 and 42786901.

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, 4220 + ... + 10167.

It is an arithmetic number, because the mean of its divisors is an integer number (8028504).

Almost surely, 2^42786938 is an apocalyptic number.

42786938 is a deficient number, since it is larger than the sum of its proper divisors (21441094).

42786938 is a wasteful number, since it uses less digits than its factorization.

42786938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15876.

The product of its digits is 580608, while the sum is 47.

The square root of 42786938 is about 6541.1725248613. The cubic root of 42786938 is about 349.7602112659.

The spelling of 42786938 in words is "forty-two million, seven hundred eighty-six thousand, nine hundred thirty-eight".