142404332121 has 32 divisors (see below), whose sum is σ = 216708710400. Its totient is φ = 92354411520.

The previous prime is 142404332117. The next prime is 142404332137. The reversal of 142404332121 is 121233404241.

142404332121 is a `hidden beast` number, since 1 + 42 + 404 + 3 + 3 + 212 + 1 = 666.

It is not a de Polignac number, because 142404332121 - 2² = 142404332117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142404332171) 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, 9264040 + ... + 9279398.

It is an arithmetic number, because the mean of its divisors is an integer number (6772147200).

Almost surely, 2^142404332121 is an apocalyptic number.

It is an amenable number.

142404332121 is a deficient number, since it is larger than the sum of its proper divisors (74304378279).

142404332121 is a wasteful number, since it uses less digits than its factorization.

142404332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24686 (or 24680 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 142404332121 its reverse (121233404241), we get a palindrome (263637736362).

The spelling of 142404332121 in words is "one hundred forty-two billion, four hundred four million, three hundred thirty-two thousand, one hundred twenty-one".