142341121 has 8 divisors (see below), whose sum is σ = 155804264. Its totient is φ = 129237120.

The previous prime is 142341097. The next prime is 142341151. The reversal of 142341121 is 121143241.

It can be written as a sum of positive squares in 4 ways, for example, as 3101121 + 139240000 = 1761^2 + 11800^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142341121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142341151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88956 + ... + 90541.

It is an arithmetic number, because the mean of its divisors is an integer number (19475533).

Almost surely, 2^142341121 is an apocalyptic number.

It is an amenable number.

142341121 is a deficient number, since it is larger than the sum of its proper divisors (13463143).

142341121 is a wasteful number, since it uses less digits than its factorization.

142341121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179571.

The product of its digits is 192, while the sum is 19.

The square root of 142341121 is about 11930.6798213681. The cubic root of 142341121 is about 522.1277719449.

Adding to 142341121 its reverse (121143241), we get a palindrome (263484362).

The spelling of 142341121 in words is "one hundred forty-two million, three hundred forty-one thousand, one hundred twenty-one".