13921242 has 8 divisors (see below), whose sum is σ = 27842496. Its totient is φ = 4640412.

The previous prime is 13921241. The next prime is 13921289. The reversal of 13921242 is 24212931.

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

13921242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (13921241) 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, 1160098 + ... + 1160109.

It is an arithmetic number, because the mean of its divisors is an integer number (3480312).

Almost surely, 2^13921242 is an apocalyptic number.

13921242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13921242 is a wasteful number, since it uses less digits than its factorization.

13921242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320212.

The product of its digits is 864, while the sum is 24.

The square root of 13921242 is about 3731.1180629940. The cubic root of 13921242 is about 240.5614286891.

The spelling of 13921242 in words is "thirteen million, nine hundred twenty-one thousand, two hundred forty-two".