201042422123 has 2 divisors, whose sum is σ = 201042422124. Its totient is φ = 201042422122.

The previous prime is 201042422003. The next prime is 201042422129. The reversal of 201042422123 is 321224240102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201042422123 is a prime.

It is not a weakly prime, because it can be changed into another prime (201042422129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100521211061 + 100521211062.

It is an arithmetic number, because the mean of its divisors is an integer number (100521211062).

Almost surely, 2^201042422123 is an apocalyptic number.

201042422123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201042422123 is an equidigital number, since it uses as much as digits as its factorization.

201042422123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 201042422123 its reverse (321224240102), we get a palindrome (522266662225).

The spelling of 201042422123 in words is "two hundred one billion, forty-two million, four hundred twenty-two thousand, one hundred twenty-three".