13942121 has 2 divisors, whose sum is σ = 13942122. Its totient is φ = 13942120.

The previous prime is 13942109. The next prime is 13942133. The reversal of 13942121 is 12124931.

It is a balanced prime because it is at equal distance from previous prime (13942109) and next prime (13942133).

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 1125721 = 3580^2 + 1061^2 .

It is a cyclic number.

It is not a de Polignac number, because 13942121 - 2¹⁰ = 13941097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13942151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6971060 + 6971061.

It is an arithmetic number, because the mean of its divisors is an integer number (6971061).

Almost surely, 2^13942121 is an apocalyptic number.

It is an amenable number.

13942121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13942121 is an equidigital number, since it uses as much as digits as its factorization.

13942121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 13942121 is about 3733.9149695728. The cubic root of 13942121 is about 240.6816328386.

The spelling of 13942121 in words is "thirteen million, nine hundred forty-two thousand, one hundred twenty-one".