12454942145 has 4 divisors (see below), whose sum is σ = 14945930580. Its totient is φ = 9963953712.

The previous prime is 12454942139. The next prime is 12454942277. The reversal of 12454942145 is 54124945421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7633167424 + 4821774721 = 87368^2 + 69439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12454942145 - 2⁶ = 12454942081 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 1245494210 + ... + 1245494219.

It is an arithmetic number, because the mean of its divisors is an integer number (3736482645).

Almost surely, 2^12454942145 is an apocalyptic number.

It is an amenable number.

12454942145 is a deficient number, since it is larger than the sum of its proper divisors (2490988435).

12454942145 is an equidigital number, since it uses as much as digits as its factorization.

12454942145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490988434.

The product of its digits is 230400, while the sum is 41.

The spelling of 12454942145 in words is "twelve billion, four hundred fifty-four million, nine hundred forty-two thousand, one hundred forty-five".