142231001421 has 16 divisors (see below), whose sum is σ = 192829586688. Its totient is φ = 93227822400.

The previous prime is 142231001383. The next prime is 142231001443. The reversal of 142231001421 is 124100132241.

It is not a de Polignac number, because 142231001421 - 2⁶ = 142231001357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142231001491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288991 + ... + 606611.

It is an arithmetic number, because the mean of its divisors is an integer number (12051849168).

Almost surely, 2^142231001421 is an apocalyptic number.

It is an amenable number.

142231001421 is a deficient number, since it is larger than the sum of its proper divisors (50598585267).

142231001421 is a wasteful number, since it uses less digits than its factorization.

142231001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320132.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 142231001421 its reverse (124100132241), we get a palindrome (266331133662).

The spelling of 142231001421 in words is "one hundred forty-two billion, two hundred thirty-one million, one thousand, four hundred twenty-one".