203402424 has 32 divisors (see below), whose sum is σ = 510149520. Its totient is φ = 67581696.

The previous prime is 203402413. The next prime is 203402461. The reversal of 203402424 is 424204302.

It is a self number, because there is not a number n which added to its sum of digits gives 203402424.

It is a congruent number.

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, 6027 + ... + 21050.

Almost surely, 2^203402424 is an apocalyptic number.

203402424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203402424 is an abundant number, since it is smaller than the sum of its proper divisors (306747096).

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

203402424 is a wasteful number, since it uses less digits than its factorization.

203402424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27399 (or 27395 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 203402424 is about 14261.9221705912. The cubic root of 203402424 is about 588.1011672844.

Adding to 203402424 its reverse (424204302), we get a palindrome (627606726).

The spelling of 203402424 in words is "two hundred three million, four hundred two thousand, four hundred twenty-four".