142523372121 has 32 divisors (see below), whose sum is σ = 205750272000. Its totient is φ = 87235977024.

The previous prime is 142523372111. The next prime is 142523372129. The reversal of 142523372121 is 121273325241.

It is not a de Polignac number, because 142523372121 - 2²¹ = 142521274969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142523372129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5468880 + ... + 5494878.

It is an arithmetic number, because the mean of its divisors is an integer number (6429696000).

Almost surely, 2^142523372121 is an apocalyptic number.

It is an amenable number.

142523372121 is a deficient number, since it is larger than the sum of its proper divisors (63226899879).

142523372121 is a wasteful number, since it uses less digits than its factorization.

142523372121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26765.

The product of its digits is 20160, while the sum is 33.

Adding to 142523372121 its reverse (121273325241), we get a palindrome (263796697362).

The spelling of 142523372121 in words is "one hundred forty-two billion, five hundred twenty-three million, three hundred seventy-two thousand, one hundred twenty-one".