12105455142 has 64 divisors (see below), whose sum is σ = 28326723840. Its totient is φ = 3409660800.

The previous prime is 12105455129. The next prime is 12105455189. The reversal of 12105455142 is 24155450121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24609 + ... + 157532.

It is an arithmetic number, because the mean of its divisors is an integer number (442605060).

Almost surely, 2^12105455142 is an apocalyptic number.

12105455142 is an abundant number, since it is smaller than the sum of its proper divisors (16221268698).

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

12105455142 is a wasteful number, since it uses less digits than its factorization.

12105455142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182229.

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 12105455142 in words is "twelve billion, one hundred five million, four hundred fifty-five thousand, one hundred forty-two".