142310121 has 4 divisors (see below), whose sum is σ = 189746832. Its totient is φ = 94873412.

The previous prime is 142310099. The next prime is 142310137. The reversal of 142310121 is 121013241.

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 142310121 - 2²⁷ = 8092393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142310121.

It is not an unprimeable number, because it can be changed into a prime (142350121) 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, 23718351 + ... + 23718356.

It is an arithmetic number, because the mean of its divisors is an integer number (47436708).

Almost surely, 2^142310121 is an apocalyptic number.

It is an amenable number.

142310121 is a deficient number, since it is larger than the sum of its proper divisors (47436711).

142310121 is an equidigital number, since it uses as much as digits as its factorization.

142310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47436710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 142310121 is about 11929.3805790577. The cubic root of 142310121 is about 522.0898650351.

Adding to 142310121 its reverse (121013241), we get a palindrome (263323362).

The spelling of 142310121 in words is "one hundred forty-two million, three hundred ten thousand, one hundred twenty-one".