13143442402 has 4 divisors (see below), whose sum is σ = 19715163606. Its totient is φ = 6571721200.

The previous prime is 13143442363. The next prime is 13143442421. The reversal of 13143442402 is 20424434131.

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

It can be written as a sum of positive squares in only one way, i.e., 12697007761 + 446434641 = 112681^2 + 21129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3285860599 + ... + 3285860602.

Almost surely, 2^13143442402 is an apocalyptic number.

13143442402 is a deficient number, since it is larger than the sum of its proper divisors (6571721204).

13143442402 is an equidigital number, since it uses as much as digits as its factorization.

13143442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571721203.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 13143442402 its reverse (20424434131), we get a palindrome (33567876533).

The spelling of 13143442402 in words is "thirteen billion, one hundred forty-three million, four hundred forty-two thousand, four hundred two".