14402142421 has 4 divisors (see below), whose sum is σ = 14403992652. Its totient is φ = 14400292192.

The previous prime is 14402142401. The next prime is 14402142437. The reversal of 14402142421 is 12424120441.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3463911025 + 10938231396 = 58855^2 + 104586^2 .

It is a cyclic number.

It is not a de Polignac number, because 14402142421 - 2¹⁵ = 14402109653 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 (14402142401) 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, 913390 + ... + 929023.

It is an arithmetic number, because the mean of its divisors is an integer number (3600998163).

Almost surely, 2^14402142421 is an apocalyptic number.

It is an amenable number.

14402142421 is a deficient number, since it is larger than the sum of its proper divisors (1850231).

14402142421 is an equidigital number, since it uses as much as digits as its factorization.

14402142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850230.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 14402142421 its reverse (12424120441), we get a palindrome (26826262862).

The spelling of 14402142421 in words is "fourteen billion, four hundred two million, one hundred forty-two thousand, four hundred twenty-one".