402342424 has 24 divisors (see below), whose sum is σ = 829209780. Its totient is φ = 182882480.

The previous prime is 402342377. The next prime is 402342431. The reversal of 402342424 is 424243204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206854 + ... + 208789.

Almost surely, 2^402342424 is an apocalyptic number.

402342424 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402342424 is an abundant number, since it is smaller than the sum of its proper divisors (426867356).

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

402342424 is a wasteful number, since it uses less digits than its factorization.

402342424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415671 (or 415656 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 402342424 is about 20058.4751165187. The cubic root of 402342424 is about 738.2417619461.

Adding to 402342424 its reverse (424243204), we get a palindrome (826585628).

The spelling of 402342424 in words is "four hundred two million, three hundred forty-two thousand, four hundred twenty-four".