142121304101231 has 16 divisors (see below), whose sum is σ = 174918985281600. Its totient is φ = 112447331336448.

The previous prime is 142121304101213. The next prime is 142121304101239. The reversal of 142121304101231 is 132101403121241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142121304101231 - 2⁶ = 142121304101167 is a prime.

It is a super-2 number, since 2×142121304101231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142121304101231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142121304101239) 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, 37063385 + ... + 40717773.

It is an arithmetic number, because the mean of its divisors is an integer number (10932436580100).

Almost surely, 2^{142121304101231} is an apocalyptic number.

142121304101231 is a deficient number, since it is larger than the sum of its proper divisors (32797681180369).

142121304101231 is a wasteful number, since it uses less digits than its factorization.

142121304101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081778.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 142121304101231 its reverse (132101403121241), we get a palindrome (274222707222472).

The spelling of 142121304101231 in words is "one hundred forty-two trillion, one hundred twenty-one billion, three hundred four million, one hundred one thousand, two hundred thirty-one".