12132440402 has 8 divisors (see below), whose sum is σ = 18199687500. Its totient is φ = 6065877904.

The previous prime is 12132440401. The next prime is 12132440413. The reversal of 12132440402 is 20404423121.

It can be written as a sum of positive squares in 2 ways, for example, as 12112983481 + 19456921 = 110059^2 + 4411^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12132440402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12132440401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124277 + ... + 199272.

Almost surely, 2^12132440402 is an apocalyptic number.

12132440402 is a deficient number, since it is larger than the sum of its proper divisors (6067247098).

12132440402 is a wasteful number, since it uses less digits than its factorization.

12132440402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342300.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12132440402 its reverse (20404423121), we get a palindrome (32536863523).

The spelling of 12132440402 in words is "twelve billion, one hundred thirty-two million, four hundred forty thousand, four hundred two".