14042320421 has 2 divisors, whose sum is σ = 14042320422. Its totient is φ = 14042320420.

The previous prime is 14042320381. The next prime is 14042320423. The reversal of 14042320421 is 12402324041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8856880321 + 5185440100 = 94111^2 + 72010^2 .

It is a cyclic number.

It is not a de Polignac number, because 14042320421 - 2²⁶ = 13975211557 is a prime.

Together with 14042320423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14042320423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7021160210 + 7021160211.

It is an arithmetic number, because the mean of its divisors is an integer number (7021160211).

Almost surely, 2^14042320421 is an apocalyptic number.

It is an amenable number.

14042320421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14042320421 is an equidigital number, since it uses as much as digits as its factorization.

14042320421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 14042320421 its reverse (12402324041), we get a palindrome (26444644462).

The spelling of 14042320421 in words is "fourteen billion, forty-two million, three hundred twenty thousand, four hundred twenty-one".