13780342 has 4 divisors (see below), whose sum is σ = 20670516. Its totient is φ = 6890170.

The previous prime is 13780331. The next prime is 13780369. The reversal of 13780342 is 24308731.

13780342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24308731 = 743 ⋅32717.

It is a self number, because there is not a number n which added to its sum of digits gives 13780342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445084 + ... + 3445087.

It is an arithmetic number, because the mean of its divisors is an integer number (5167629).

Almost surely, 2^13780342 is an apocalyptic number.

13780342 is a deficient number, since it is larger than the sum of its proper divisors (6890174).

13780342 is an equidigital number, since it uses as much as digits as its factorization.

13780342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890173.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 13780342 is about 3712.1883034135. The cubic root of 13780342 is about 239.7470831017.

The spelling of 13780342 in words is "thirteen million, seven hundred eighty thousand, three hundred forty-two".