405400043442 has 32 divisors (see below), whose sum is σ = 811542251520. Its totient is φ = 135009711360.

The previous prime is 405400043413. The next prime is 405400043491. The reversal of 405400043442 is 244340004504.

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, 62548842 + ... + 62555322.

It is an arithmetic number, because the mean of its divisors is an integer number (25360695360).

Almost surely, 2^405400043442 is an apocalyptic number.

405400043442 is an abundant number, since it is smaller than the sum of its proper divisors (406142208078).

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

405400043442 is a wasteful number, since it uses less digits than its factorization.

405400043442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14418.

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 405400043442 its reverse (244340004504), we get a palindrome (649740047946).

The spelling of 405400043442 in words is "four hundred five billion, four hundred million, forty-three thousand, four hundred forty-two".