402045421120 has 112 divisors (see below), whose sum is σ = 1097187828480. Its totient is φ = 137459902464.

The previous prime is 402045421117. The next prime is 402045421147. The reversal of 402045421120 is 21124540204.

It is a tau number, because it is divible by the number of its divisors (112).

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, 554182 + ... + 1054138.

Almost surely, 2^402045421120 is an apocalyptic number.

402045421120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402045421120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548593914240).

402045421120 is an abundant number, since it is smaller than the sum of its proper divisors (695142407360).

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

402045421120 is a wasteful number, since it uses less digits than its factorization.

402045421120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500340 (or 500330 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 402045421120 its reverse (21124540204), we get a palindrome (423169961324).

The spelling of 402045421120 in words is "four hundred two billion, forty-five million, four hundred twenty-one thousand, one hundred twenty".