142255235121 has 16 divisors (see below), whose sum is σ = 194485233600. Its totient is φ = 92435444480.

The previous prime is 142255235113. The next prime is 142255235149. The reversal of 142255235121 is 121532552241.

It is a cyclic number.

It is not a de Polignac number, because 142255235121 - 2³ = 142255235113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142255235191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422235 + ... + 680288.

It is an arithmetic number, because the mean of its divisors is an integer number (12155327100).

Almost surely, 2^142255235121 is an apocalyptic number.

It is an amenable number.

142255235121 is a deficient number, since it is larger than the sum of its proper divisors (52229998479).

142255235121 is a wasteful number, since it uses less digits than its factorization.

142255235121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103616.

The product of its digits is 24000, while the sum is 33.

Adding to 142255235121 its reverse (121532552241), we get a palindrome (263787787362).

The spelling of 142255235121 in words is "one hundred forty-two billion, two hundred fifty-five million, two hundred thirty-five thousand, one hundred twenty-one".