13920142 has 8 divisors (see below), whose sum is σ = 20896632. Its totient is φ = 6954600.

The previous prime is 13920133. The next prime is 13920143. The reversal of 13920142 is 24102931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292 + ... + 5752.

It is an arithmetic number, because the mean of its divisors is an integer number (2612079).

Almost surely, 2^13920142 is an apocalyptic number.

13920142 is a deficient number, since it is larger than the sum of its proper divisors (6976490).

13920142 is a wasteful number, since it uses less digits than its factorization.

13920142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13920142 is about 3730.9706511845. The cubic root of 13920142 is about 240.5550924598. Note that the first 3 decimals are identical.

The spelling of 13920142 in words is "thirteen million, nine hundred twenty thousand, one hundred forty-two".