10142031121 has 4 divisors (see below), whose sum is σ = 10142555632. Its totient is φ = 10141506612.

The previous prime is 10142031043. The next prime is 10142031191. The reversal of 10142031121 is 12113024101.

10142031121 is digitally balanced in base 3, because in such base 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 a cyclic number.

It is not a de Polignac number, because 10142031121 - 2⁷ = 10142030993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10142031095 and 10142031104.

It is not an unprimeable number, because it can be changed into a prime (10142031191) 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, 232095 + ... + 272308.

It is an arithmetic number, because the mean of its divisors is an integer number (2535638908).

Almost surely, 2^10142031121 is an apocalyptic number.

It is an amenable number.

10142031121 is a deficient number, since it is larger than the sum of its proper divisors (524511).

10142031121 is an equidigital number, since it uses as much as digits as its factorization.

10142031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524510.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10142031121 its reverse (12113024101), we get a palindrome (22255055222).

The spelling of 10142031121 in words is "ten billion, one hundred forty-two million, thirty-one thousand, one hundred twenty-one".