142141201121 has 4 divisors (see below), whose sum is σ = 142143137472. Its totient is φ = 142139264772.

The previous prime is 142141201099. The next prime is 142141201151. The reversal of 142141201121 is 121102141241.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142141201121 is a prime.

It is a super-2 number, since 2×142141201121² (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 = 142141201093 and 142141201102.

It is not an unprimeable number, because it can be changed into a prime (142141201151) 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, 853541 + ... + 1006386.

It is an arithmetic number, because the mean of its divisors is an integer number (35535784368).

Almost surely, 2^142141201121 is an apocalyptic number.

It is an amenable number.

142141201121 is a deficient number, since it is larger than the sum of its proper divisors (1936351).

142141201121 is an equidigital number, since it uses as much as digits as its factorization.

142141201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936350.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 142141201121 its reverse (121102141241), we get a palindrome (263243342362).

The spelling of 142141201121 in words is "one hundred forty-two billion, one hundred forty-one million, two hundred one thousand, one hundred twenty-one".