405231421882 has 12 divisors (see below), whose sum is σ = 707087481210. Its totient is φ = 173670609336.

The previous prime is 405231421817. The next prime is 405231421883. The reversal of 405231421882 is 288124132504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 395868730761 + 9362691121 = 629181^2 + 96761^2 .

It is not an unprimeable number, because it can be changed into a prime (405231421883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2067507157 + ... + 2067507352.

Almost surely, 2^405231421882 is an apocalyptic number.

405231421882 is a deficient number, since it is larger than the sum of its proper divisors (301856059328).

405231421882 is a wasteful number, since it uses less digits than its factorization.

405231421882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135014525 (or 4135014518 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 40.

The spelling of 405231421882 in words is "four hundred five billion, two hundred thirty-one million, four hundred twenty-one thousand, eight hundred eighty-two".