142403120121 has 16 divisors (see below), whose sum is σ = 201322900800. Its totient is φ = 89282320128.

The previous prime is 142403120117. The next prime is 142403120173. The reversal of 142403120121 is 121021304241.

It is not a de Polignac number, because 142403120121 - 2² = 142403120117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142403120021) 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, 9110076 + ... + 9125693.

It is an arithmetic number, because the mean of its divisors is an integer number (12582681300).

Almost surely, 2^142403120121 is an apocalyptic number.

It is an amenable number.

142403120121 is a deficient number, since it is larger than the sum of its proper divisors (58919780679).

142403120121 is a wasteful number, since it uses less digits than its factorization.

142403120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18235928.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 142403120121 its reverse (121021304241), we get a palindrome (263424424362).

The spelling of 142403120121 in words is "one hundred forty-two billion, four hundred three million, one hundred twenty thousand, one hundred twenty-one".