142001320231 has 4 divisors (see below), whose sum is σ = 142002316264. Its totient is φ = 142000324200.

The previous prime is 142001320211. The next prime is 142001320291. The reversal of 142001320231 is 132023100241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 142001320231 - 2⁵ = 142001320199 is a prime.

It is a super-2 number, since 2×142001320231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142001320199 and 142001320208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001320211) 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 3 ways as a sum of consecutive naturals, for example, 239400 + ... + 584221.

It is an arithmetic number, because the mean of its divisors is an integer number (35500579066).

Almost surely, 2^142001320231 is an apocalyptic number.

142001320231 is a deficient number, since it is larger than the sum of its proper divisors (996033).

142001320231 is an equidigital number, since it uses as much as digits as its factorization.

142001320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996032.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 142001320231 its reverse (132023100241), we get a palindrome (274024420472).

The spelling of 142001320231 in words is "one hundred forty-two billion, one million, three hundred twenty thousand, two hundred thirty-one".