13720142 has 4 divisors (see below), whose sum is σ = 20580216. Its totient is φ = 6860070.

The previous prime is 13720129. The next prime is 13720159. The reversal of 13720142 is 24102731.

13720142 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.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430034 + ... + 3430037.

It is an arithmetic number, because the mean of its divisors is an integer number (5145054).

Almost surely, 2^13720142 is an apocalyptic number.

13720142 is a deficient number, since it is larger than the sum of its proper divisors (6860074).

13720142 is an equidigital number, since it uses as much as digits as its factorization.

13720142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6860073.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 13720142 is about 3704.0710036391. The cubic root of 13720142 is about 239.3974584386.

Adding to 13720142 its reverse (24102731), we get a palindrome (37822873).

The spelling of 13720142 in words is "thirteen million, seven hundred twenty thousand, one hundred forty-two".