142331421421 has 16 divisors (see below), whose sum is σ = 168337808640. Its totient is φ = 117746576640.

The previous prime is 142331421389. The next prime is 142331421439. The reversal of 142331421421 is 124124133241.

It is a happy number.

It is not a de Polignac number, because 142331421421 - 2⁵ = 142331421389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142331421421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142331421481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404901 + ... + 669781.

It is an arithmetic number, because the mean of its divisors is an integer number (10521113040).

Almost surely, 2^142331421421 is an apocalyptic number.

It is an amenable number.

142331421421 is a deficient number, since it is larger than the sum of its proper divisors (26006387219).

142331421421 is a wasteful number, since it uses less digits than its factorization.

142331421421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267564.

The product of its digits is 4608, while the sum is 28.

Adding to 142331421421 its reverse (124124133241), we get a palindrome (266455554662).

The spelling of 142331421421 in words is "one hundred forty-two billion, three hundred thirty-one million, four hundred twenty-one thousand, four hundred twenty-one".