42363994 has 4 divisors (see below), whose sum is σ = 63545994. Its totient is φ = 21181996.

The previous prime is 42363989. The next prime is 42364009. The reversal of 42363994 is 49936324.

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., 37368769 + 4995225 = 6113^2 + 2235^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10590997 + ... + 10591000.

Almost surely, 2^42363994 is an apocalyptic number.

42363994 is a deficient number, since it is larger than the sum of its proper divisors (21182000).

42363994 is a wasteful number, since it uses less digits than its factorization.

42363994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21181999.

The product of its digits is 139968, while the sum is 40.

The square root of 42363994 is about 6508.7628624801. The cubic root of 42363994 is about 348.6039464135.

The spelling of 42363994 in words is "forty-two million, three hundred sixty-three thousand, nine hundred ninety-four".