13140321442 has 4 divisors (see below), whose sum is σ = 19710482166. Its totient is φ = 6570160720.

The previous prime is 13140321437. The next prime is 13140321461. The reversal of 13140321442 is 24412304131.

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., 11402181961 + 1738139481 = 106781^2 + 41691^2 .

It is a super-3 number, since 3×13140321442³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3285080359 + ... + 3285080362.

Almost surely, 2^13140321442 is an apocalyptic number.

13140321442 is a deficient number, since it is larger than the sum of its proper divisors (6570160724).

13140321442 is an equidigital number, since it uses as much as digits as its factorization.

13140321442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570160723.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 13140321442 its reverse (24412304131), we get a palindrome (37552625573).

The spelling of 13140321442 in words is "thirteen billion, one hundred forty million, three hundred twenty-one thousand, four hundred forty-two".