42378734 has 8 divisors (see below), whose sum is σ = 63795168. Its totient is φ = 21113680.

The previous prime is 42378703. The next prime is 42378751. The reversal of 42378734 is 43787324.

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

It is a Curzon 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, 37142 + ... + 38265.

It is an arithmetic number, because the mean of its divisors is an integer number (7974396).

Almost surely, 2^42378734 is an apocalyptic number.

42378734 is a deficient number, since it is larger than the sum of its proper divisors (21416434).

42378734 is a wasteful number, since it uses less digits than its factorization.

42378734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75690.

The product of its digits is 112896, while the sum is 38.

The square root of 42378734 is about 6509.8950836400. The cubic root of 42378734 is about 348.6443724597.

The spelling of 42378734 in words is "forty-two million, three hundred seventy-eight thousand, seven hundred thirty-four".