12402032305 has 16 divisors (see below), whose sum is σ = 16289988624. Its totient is φ = 9008282880.

The previous prime is 12402032297. The next prime is 12402032339. The reversal of 12402032305 is 50323020421.

It can be written as a sum of positive squares in 8 ways, for example, as 5746246416 + 6655785889 = 75804^2 + 81583^2 .

It is not a de Polignac number, because 12402032305 - 2³ = 12402032297 is a prime.

It is a super-2 number, since 2×12402032305² (a number of 21 digits) contains 22 as substring.

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, 1559974 + ... + 1567903.

It is an arithmetic number, because the mean of its divisors is an integer number (1018124289).

Almost surely, 2^12402032305 is an apocalyptic number.

It is an amenable number.

12402032305 is a deficient number, since it is larger than the sum of its proper divisors (3887956319).

12402032305 is a wasteful number, since it uses less digits than its factorization.

12402032305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127956.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 12402032305 its reverse (50323020421), we get a palindrome (62725052726).

The spelling of 12402032305 in words is "twelve billion, four hundred two million, thirty-two thousand, three hundred five".