142234432232421 has 4 divisors (see below), whose sum is σ = 189645909643232. Its totient is φ = 94822954821612.

The previous prime is 142234432232363. The next prime is 142234432232429. The reversal of 142234432232421 is 124232234432241.

142234432232421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142234432232421 - 2⁶ = 142234432232357 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 142234432232421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142234432232429) 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, 23705738705401 + ... + 23705738705406.

It is an arithmetic number, because the mean of its divisors is an integer number (47411477410808).

Almost surely, 2^{142234432232421} is an apocalyptic number.

It is an amenable number.

142234432232421 is a deficient number, since it is larger than the sum of its proper divisors (47411477410811).

142234432232421 is an equidigital number, since it uses as much as digits as its factorization.

142234432232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47411477410810.

The product of its digits is 442368, while the sum is 39.

Adding to 142234432232421 its reverse (124232234432241), we get a palindrome (266466666664662).

The spelling of 142234432232421 in words is "one hundred forty-two trillion, two hundred thirty-four billion, four hundred thirty-two million, two hundred thirty-two thousand, four hundred twenty-one".