13400442002 has 4 divisors (see below), whose sum is σ = 20100663006. Its totient is φ = 6700221000.

The previous prime is 13400442001. The next prime is 13400442007. The reversal of 13400442002 is 20024400431.

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., 13315082881 + 85359121 = 115391^2 + 9239^2 .

It is not an unprimeable number, because it can be changed into a prime (13400442001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350110499 + ... + 3350110502.

Almost surely, 2^13400442002 is an apocalyptic number.

13400442002 is a deficient number, since it is larger than the sum of its proper divisors (6700221004).

13400442002 is an equidigital number, since it uses as much as digits as its factorization.

13400442002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700221003.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 13400442002 its reverse (20024400431), we get a palindrome (33424842433).

The spelling of 13400442002 in words is "thirteen billion, four hundred million, four hundred forty-two thousand, two".