42242930 has 16 divisors (see below), whose sum is σ = 76115160. Its totient is φ = 16879872.

The previous prime is 42242923. The next prime is 42242939. The reversal of 42242930 is 3924224.

It can be written as a sum of positive squares in 4 ways, for example, as 15689521 + 26553409 = 3961^2 + 5153^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42242930.

It is not an unprimeable number, because it can be changed into a prime (42242939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13472 + ... + 16308.

Almost surely, 2^42242930 is an apocalyptic number.

42242930 is a deficient number, since it is larger than the sum of its proper divisors (33872230).

42242930 is a wasteful number, since it uses less digits than its factorization.

42242930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42242930 is about 6499.4561310928. The cubic root of 42242930 is about 348.2715599551.

The spelling of 42242930 in words is "forty-two million, two hundred forty-two thousand, nine hundred thirty".