14342521421 has 4 divisors (see below), whose sum is σ = 14346060732. Its totient is φ = 14338982112.

The previous prime is 14342521409. The next prime is 14342521433. The reversal of 14342521421 is 12412524341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (14342521409) and next prime (14342521433).

It can be written as a sum of positive squares in 2 ways, for example, as 2223594025 + 12118927396 = 47155^2 + 110086^2 .

It is a cyclic number.

It is not a de Polignac number, because 14342521421 - 2¹⁰ = 14342520397 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 (14342521441) 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, 1763570 + ... + 1771683.

It is an arithmetic number, because the mean of its divisors is an integer number (3586515183).

Almost surely, 2^14342521421 is an apocalyptic number.

It is an amenable number.

14342521421 is a deficient number, since it is larger than the sum of its proper divisors (3539311).

14342521421 is an equidigital number, since it uses as much as digits as its factorization.

14342521421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539310.

The product of its digits is 7680, while the sum is 29.

The spelling of 14342521421 in words is "fourteen billion, three hundred forty-two million, five hundred twenty-one thousand, four hundred twenty-one".