42791678 has 8 divisors (see below), whose sum is σ = 64432368. Its totient is φ = 21314224.

The previous prime is 42791663. The next prime is 42791681. The reversal of 42791678 is 87619724.

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

It is a super-2 number, since 2×42791678² = 3662255412111368, which contains 22 as substring.

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, 40151 + ... + 41202.

It is an arithmetic number, because the mean of its divisors is an integer number (8054046).

Almost surely, 2^42791678 is an apocalyptic number.

42791678 is a deficient number, since it is larger than the sum of its proper divisors (21640690).

42791678 is a wasteful number, since it uses less digits than its factorization.

42791678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81618.

The product of its digits is 169344, while the sum is 44.

The square root of 42791678 is about 6541.5348351897. The cubic root of 42791678 is about 349.7731264394.

The spelling of 42791678 in words is "forty-two million, seven hundred ninety-one thousand, six hundred seventy-eight".