442137678 has 8 divisors (see below), whose sum is σ = 884275368. Its totient is φ = 147379224.

The previous prime is 442137667. The next prime is 442137691. The reversal of 442137678 is 876731244.

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

442137678 is an admirable number.

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, 36844801 + ... + 36844812.

It is an arithmetic number, because the mean of its divisors is an integer number (110534421).

Almost surely, 2^442137678 is an apocalyptic number.

442137678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442137678 is a wasteful number, since it uses less digits than its factorization.

442137678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73689618.

The product of its digits is 225792, while the sum is 42.

The square root of 442137678 is about 21027.0701240092. The cubic root of 442137678 is about 761.8202433502.

The spelling of 442137678 in words is "four hundred forty-two million, one hundred thirty-seven thousand, six hundred seventy-eight".