13920442 has 8 divisors (see below), whose sum is σ = 20896596. Its totient is φ = 6954912.

The previous prime is 13920427. The next prime is 13920449. The reversal of 13920442 is 24402931.

13920442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13920361 + 81 = 3731^2 + 9^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13920449) 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, 3238 + ... + 6190.

Almost surely, 2^13920442 is an apocalyptic number.

13920442 is a deficient number, since it is larger than the sum of its proper divisors (6976154).

13920442 is a wasteful number, since it uses less digits than its factorization.

13920442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5312.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13920442 is about 3731.0108549829. The cubic root of 13920442 is about 240.5568205555.

The spelling of 13920442 in words is "thirteen million, nine hundred twenty thousand, four hundred forty-two".