201442244123 has 2 divisors, whose sum is σ = 201442244124. Its totient is φ = 201442244122.

The previous prime is 201442244041. The next prime is 201442244173. The reversal of 201442244123 is 321442244102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201442244123 - 2³⁴ = 184262374939 is a prime.

It is not a weakly prime, because it can be changed into another prime (201442244173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100721122061 + 100721122062.

It is an arithmetic number, because the mean of its divisors is an integer number (100721122062).

Almost surely, 2^201442244123 is an apocalyptic number.

201442244123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201442244123 is an equidigital number, since it uses as much as digits as its factorization.

201442244123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 201442244123 its reverse (321442244102), we get a palindrome (522884488225).

The spelling of 201442244123 in words is "two hundred one billion, four hundred forty-two million, two hundred forty-four thousand, one hundred twenty-three".