42747994 has 8 divisors (see below), whose sum is σ = 65686068. Its totient is φ = 20852640.

The previous prime is 42747989. The next prime is 42748003. The reversal of 42747994 is 49974724.

It can be written as a sum of positive squares in 2 ways, for example, as 42732369 + 15625 = 6537^2 + 125^2 .

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

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, 260577 + ... + 260740.

Almost surely, 2^42747994 is an apocalyptic number.

42747994 is a deficient number, since it is larger than the sum of its proper divisors (22938074).

42747994 is a wasteful number, since it uses less digits than its factorization.

42747994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521360.

The product of its digits is 508032, while the sum is 46.

The square root of 42747994 is about 6538.1950108574. The cubic root of 42747994 is about 349.6540636349.

The spelling of 42747994 in words is "forty-two million, seven hundred forty-seven thousand, nine hundred ninety-four".