13720123127 has 4 divisors (see below), whose sum is σ = 14162707776. Its totient is φ = 13277538480.

The previous prime is 13720123121. The next prime is 13720123129. The reversal of 13720123127 is 72132102731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13720123127 - 2⁶ = 13720123063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13720123127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13720123121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221292278 + ... + 221292339.

It is an arithmetic number, because the mean of its divisors is an integer number (3540676944).

Almost surely, 2^13720123127 is an apocalyptic number.

13720123127 is a deficient number, since it is larger than the sum of its proper divisors (442584649).

13720123127 is an equidigital number, since it uses as much as digits as its factorization.

13720123127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442584648.

The product of its (nonzero) digits is 3528, while the sum is 29.

Adding to 13720123127 its reverse (72132102731), we get a palindrome (85852225858).

The spelling of 13720123127 in words is "thirteen billion, seven hundred twenty million, one hundred twenty-three thousand, one hundred twenty-seven".