13942243 has 16 divisors (see below), whose sum is σ = 16620480.
Its totient is φ = 11442816.
The previous prime is 13942237. The next prime is 13942289. The reversal of 13942243 is 34224931.
It is not a de Polignac number, because 13942243 - 29 = 13941731 is a prime.
It is a super-2 number, since 2×139422432 = 388772279742098, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (13942223) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34921 + ... + 35317.
It is an arithmetic number, because the mean of its divisors is an integer number (1038780).
Almost surely, 213942243 is an apocalyptic number.
13942243 is a deficient number, since it is larger than the sum of its proper divisors (2678237).
13942243 is a wasteful number, since it uses less digits than its factorization.
13942243 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 606.
The product of its digits is 5184, while the sum is 28.
The square root of 13942243 is about 3733.9313062776.
The cubic root of 13942243 is about 240.6823348617.
The spelling of 13942243 in words is "thirteen million, nine hundred forty-two thousand, two hundred forty-three".