13430403442 has 4 divisors (see below), whose sum is σ = 20145605166. Its totient is φ = 6715201720.

The previous prime is 13430403383. The next prime is 13430403443. The reversal of 13430403442 is 24430403431.

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., 12190588921 + 1239814521 = 110411^2 + 35211^2 .

It is a super-2 number, since 2×13430403442² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13430403442.

It is not an unprimeable number, because it can be changed into a prime (13430403443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3357600859 + ... + 3357600862.

Almost surely, 2^13430403442 is an apocalyptic number.

13430403442 is a deficient number, since it is larger than the sum of its proper divisors (6715201724).

13430403442 is an equidigital number, since it uses as much as digits as its factorization.

13430403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715201723.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 13430403442 its reverse (24430403431), we get a palindrome (37860806873).

The spelling of 13430403442 in words is "thirteen billion, four hundred thirty million, four hundred three thousand, four hundred forty-two".