905403109122 has 30 divisors (see below), whose sum is σ = 2028800771283. Its totient is φ = 301796999388.

The previous prime is 905403109109. The next prime is 905403109151. The reversal of 905403109122 is 221901304509.

905403109122 is a `hidden beast` number, since 9 + 0 + 540 + 3 + 1 + 0 + 91 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 452701554561 + 452701554561 = 672831^2 + 672831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=672831.

It is a super-2 number, since 2×905403109122² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12073579 + ... + 12148337.

Almost surely, 2^905403109122 is an apocalyptic number.

905403109122 is an abundant number, since it is smaller than the sum of its proper divisors (1123397662161).

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

905403109122 is an frugal number, since it uses more digits than its factorization.

905403109122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149532 (or 74764 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 905403109122 in words is "nine hundred five billion, four hundred three million, one hundred nine thousand, one hundred twenty-two".