14378421 has 8 divisors (see below), whose sum is σ = 20180320. Its totient is φ = 9081072.

The previous prime is 14378417. The next prime is 14378431. The reversal of 14378421 is 12487341.

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

It is not a de Polignac number, because 14378421 - 2² = 14378417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14378411) 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, 126070 + ... + 126183.

It is an arithmetic number, because the mean of its divisors is an integer number (2522540).

Almost surely, 2^14378421 is an apocalyptic number.

It is an amenable number.

14378421 is a deficient number, since it is larger than the sum of its proper divisors (5801899).

14378421 is a wasteful number, since it uses less digits than its factorization.

14378421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252275.

The product of its digits is 5376, while the sum is 30.

The square root of 14378421 is about 3791.8888433075. Note that the first 4 decimals coincide. The cubic root of 14378421 is about 243.1664932937.

The spelling of 14378421 in words is "fourteen million, three hundred seventy-eight thousand, four hundred twenty-one".