14238421421 has 24 divisors (see below), whose sum is σ = 17153187840. Its totient is φ = 11770466400.

The previous prime is 14238421399. The next prime is 14238421429. The reversal of 14238421421 is 12412483241.

It is not a de Polignac number, because 14238421421 - 2⁶ = 14238421357 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 (14238421429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1403156 + ... + 1413266.

It is an arithmetic number, because the mean of its divisors is an integer number (714716160).

Almost surely, 2^14238421421 is an apocalyptic number.

It is an amenable number.

14238421421 is a deficient number, since it is larger than the sum of its proper divisors (2914766419).

14238421421 is a wasteful number, since it uses less digits than its factorization.

14238421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11145 (or 11138 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The spelling of 14238421421 in words is "fourteen billion, two hundred thirty-eight million, four hundred twenty-one thousand, four hundred twenty-one".