142121230121 has 8 divisors (see below), whose sum is σ = 153552182784. Its totient is φ = 130761498960.

The previous prime is 142121230061. The next prime is 142121230129. The reversal of 142121230121 is 121032121241.

142121230121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142121230121 - 2¹⁰ = 142121229097 is a prime.

It is a super-2 number, since 2×142121230121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142121230093 and 142121230102.

It is not an unprimeable number, because it can be changed into a prime (142121230129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17801225 + ... + 17809206.

It is an arithmetic number, because the mean of its divisors is an integer number (19194022848).

Almost surely, 2^142121230121 is an apocalyptic number.

It is an amenable number.

142121230121 is a deficient number, since it is larger than the sum of its proper divisors (11430952663).

142121230121 is a wasteful number, since it uses less digits than its factorization.

142121230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35610751.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 142121230121 its reverse (121032121241), we get a palindrome (263153351362).

The spelling of 142121230121 in words is "one hundred forty-two billion, one hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".