42423930 has 48 divisors (see below), whose sum is σ = 113002344. Its totient is φ = 11036160.

The previous prime is 42423923. The next prime is 42423943. The reversal of 42423930 is 3932424.

It is a happy number.

42423930 is a `hidden beast` number, since 424 + 239 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25010001 + 17413929 = 5001^2 + 4173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42423894 and 42423903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2059 + ... + 9438.

Almost surely, 2^42423930 is an apocalyptic number.

42423930 is an abundant number, since it is smaller than the sum of its proper divisors (70578414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42423930 is a wasteful number, since it uses less digits than its factorization.

42423930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551 (or 11548 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 42423930 is about 6513.3654895146. The cubic root of 42423930 is about 348.7682689778.

The spelling of 42423930 in words is "forty-two million, four hundred twenty-three thousand, nine hundred thirty".