402220120 has 32 divisors (see below), whose sum is σ = 952628400. Its totient is φ = 152419968.

The previous prime is 402220079. The next prime is 402220121. The reversal of 402220120 is 21022204.

It is a self number, because there is not a number n which added to its sum of digits gives 402220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402220121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263859 + ... + 265378.

Almost surely, 2^402220120 is an apocalyptic number.

402220120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402220120 is an abundant number, since it is smaller than the sum of its proper divisors (550408280).

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

402220120 is a wasteful number, since it uses less digits than its factorization.

402220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529267 (or 529263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 402220120 is about 20055.4261984132. The cubic root of 402220120 is about 738.1669508189.

Adding to 402220120 its reverse (21022204), we get a palindrome (423242324).

It can be divided in two parts, 4022 and 20120, that added together give a palindrome (24142).

The spelling of 402220120 in words is "four hundred two million, two hundred twenty thousand, one hundred twenty".