423142402121 has 2 divisors, whose sum is σ = 423142402122. Its totient is φ = 423142402120.

The previous prime is 423142402099. The next prime is 423142402159. The reversal of 423142402121 is 121204241324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296819025721 + 126323376400 = 544811^2 + 355420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423142402121 is a prime.

It is not a weakly prime, because it can be changed into another prime (423142404121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211571201060 + 211571201061.

It is an arithmetic number, because the mean of its divisors is an integer number (211571201061).

Almost surely, 2^423142402121 is an apocalyptic number.

It is an amenable number.

423142402121 is a deficient number, since it is larger than the sum of its proper divisors (1).

423142402121 is an equidigital number, since it uses as much as digits as its factorization.

423142402121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 423142402121 its reverse (121204241324), we get a palindrome (544346643445).

The spelling of 423142402121 in words is "four hundred twenty-three billion, one hundred forty-two million, four hundred two thousand, one hundred twenty-one".