142423403121 has 12 divisors (see below), whose sum is σ = 205898389840. Its totient is φ = 94867844760.

The previous prime is 142423403093. The next prime is 142423403141. The reversal of 142423403121 is 121304324241.

142423403121 is a `hidden beast` number, since 1 + 4 + 2 + 4 + 2 + 340 + 312 + 1 = 666.

It is not a de Polignac number, because 142423403121 - 2²¹ = 142421305969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142423403141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6746431 + ... + 6767508.

Almost surely, 2^142423403121 is an apocalyptic number.

It is an amenable number.

142423403121 is a deficient number, since it is larger than the sum of its proper divisors (63474986719).

142423403121 is a wasteful number, since it uses less digits than its factorization.

142423403121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13515116 (or 13515113 counting only the distinct ones).

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

Adding to 142423403121 its reverse (121304324241), we get a palindrome (263727727362).

The spelling of 142423403121 in words is "one hundred forty-two billion, four hundred twenty-three million, four hundred three thousand, one hundred twenty-one".