123202404 has 48 divisors (see below), whose sum is σ = 343987840. Its totient is φ = 37908000.

The previous prime is 123202381. The next prime is 123202423. The reversal of 123202404 is 404202321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42472 + ... + 45279.

Almost surely, 2^123202404 is an apocalyptic number.

It is an amenable number.

123202404 is an abundant number, since it is smaller than the sum of its proper divisors (220785436).

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

123202404 is a wasteful number, since it uses less digits than its factorization.

123202404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87777 (or 87769 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 123202404 is about 11099.6578325640. The cubic root of 123202404 is about 497.5916234033.

Adding to 123202404 its reverse (404202321), we get a palindrome (527404725).

The spelling of 123202404 in words is "one hundred twenty-three million, two hundred two thousand, four hundred four".