402202031420 has 24 divisors (see below), whose sum is σ = 965284875744. Its totient is φ = 137897839296.

The previous prime is 402202031347. The next prime is 402202031453. The reversal of 402202031420 is 24130202204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 402202031392 and 402202031401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436435687 + ... + 1436435966.

It is an arithmetic number, because the mean of its divisors is an integer number (40220203156).

Almost surely, 2^402202031420 is an apocalyptic number.

It is an amenable number.

402202031420 is an abundant number, since it is smaller than the sum of its proper divisors (563082844324).

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

402202031420 is a wasteful number, since it uses less digits than its factorization.

402202031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872871669 (or 2872871667 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 402202031420 its reverse (24130202204), we get a palindrome (426332233624).

The spelling of 402202031420 in words is "four hundred two billion, two hundred two million, thirty-one thousand, four hundred twenty".