13909142 has 16 divisors (see below), whose sum is σ = 23194752. Its totient is φ = 6212160.

The previous prime is 13909141. The next prime is 13909153. The reversal of 13909142 is 24190931.

It is a happy number.

13909142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13909141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7823 + ... + 9434.

It is an arithmetic number, because the mean of its divisors is an integer number (1449672).

Almost surely, 2^13909142 is an apocalyptic number.

13909142 is a deficient number, since it is larger than the sum of its proper divisors (9285610).

13909142 is a wasteful number, since it uses less digits than its factorization.

13909142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17303.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 13909142 is about 3729.4962126271. The cubic root of 13909142 is about 240.4917118007.

It can be divided in two parts, 13909 and 142, that multiplied together give a triangular number (1975078 = T₁₉₈₇).

The spelling of 13909142 in words is "thirteen million, nine hundred nine thousand, one hundred forty-two".