623030042 has 16 divisors (see below), whose sum is σ = 990266472. Its totient is φ = 292968960.

The previous prime is 623030021. The next prime is 623030071. The reversal of 623030042 is 240030326.

It can be written as a sum of positive squares in 4 ways, for example, as 576912361 + 46117681 = 24019^2 + 6791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 623029996 and 623030023.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44168 + ... + 56540.

Almost surely, 2^623030042 is an apocalyptic number.

623030042 is a deficient number, since it is larger than the sum of its proper divisors (367236430).

623030042 is a wasteful number, since it uses less digits than its factorization.

623030042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13873.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 623030042 is about 24960.5697451000. The cubic root of 623030042 is about 854.0887396886.

Adding to 623030042 its reverse (240030326), we get a palindrome (863060368).

The spelling of 623030042 in words is "six hundred twenty-three million, thirty thousand, forty-two".