402424031420 has 48 divisors (see below), whose sum is σ = 889665638400. Its totient is φ = 152480946240.

The previous prime is 402424031389. The next prime is 402424031441. The reversal of 402424031420 is 24130424204.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 402424031420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777485 + ... + 3882555.

It is an arithmetic number, because the mean of its divisors is an integer number (18534700800).

Almost surely, 2^402424031420 is an apocalyptic number.

It is an amenable number.

402424031420 is an abundant number, since it is smaller than the sum of its proper divisors (487241606980).

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

402424031420 is a wasteful number, since it uses less digits than its factorization.

402424031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115178 (or 115176 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 402424031420 its reverse (24130424204), we get a palindrome (426554455624).

The spelling of 402424031420 in words is "four hundred two billion, four hundred twenty-four million, thirty-one thousand, four hundred twenty".