13105720142 has 4 divisors (see below), whose sum is σ = 19658580216. Its totient is φ = 6552860070.

The previous prime is 13105720141. The next prime is 13105720153. The reversal of 13105720142 is 24102750131.

13105720142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24102750131 = 31973 ⋅753847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13105720141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3276430034 + ... + 3276430037.

It is an arithmetic number, because the mean of its divisors is an integer number (4914645054).

Almost surely, 2^13105720142 is an apocalyptic number.

13105720142 is a deficient number, since it is larger than the sum of its proper divisors (6552860074).

13105720142 is an equidigital number, since it uses as much as digits as its factorization.

13105720142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6552860073.

The product of its (nonzero) digits is 1680, while the sum is 26.

The spelling of 13105720142 in words is "thirteen billion, one hundred five million, seven hundred twenty thousand, one hundred forty-two".