42855994 has 4 divisors (see below), whose sum is σ = 64283994. Its totient is φ = 21427996.

The previous prime is 42855983. The next prime is 42856003. The reversal of 42855994 is 49955824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42706225 + 149769 = 6535^2 + 387^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10713997 + ... + 10714000.

Almost surely, 2^42855994 is an apocalyptic number.

42855994 is a deficient number, since it is larger than the sum of its proper divisors (21428000).

42855994 is a wasteful number, since it uses less digits than its factorization.

42855994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21427999.

The product of its digits is 518400, while the sum is 46.

The square root of 42855994 is about 6546.4489610781. The cubic root of 42855994 is about 349.9482753495.

The spelling of 42855994 in words is "forty-two million, eight hundred fifty-five thousand, nine hundred ninety-four".