402424420 has 24 divisors (see below), whose sum is σ = 855792000. Its totient is φ = 158931552.

The previous prime is 402424417. The next prime is 402424457. The reversal of 402424420 is 24424204.

It is a junction number, because it is equal to n+sod(n) for n = 402424391 and 402424400.

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, 125770 + ... + 128929.

It is an arithmetic number, because the mean of its divisors is an integer number (35658000).

Almost surely, 2^402424420 is an apocalyptic number.

It is an amenable number.

402424420 is an abundant number, since it is smaller than the sum of its proper divisors (453367580).

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

402424420 is a wasteful number, since it uses less digits than its factorization.

402424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254787 (or 254785 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 402424420 is about 20060.5189364582. The cubic root of 402424420 is about 738.2919089157.

Adding to 402424420 its reverse (24424204), we get a palindrome (426848624).

The spelling of 402424420 in words is "four hundred two million, four hundred twenty-four thousand, four hundred twenty".