201442420019 has 2 divisors, whose sum is σ = 201442420020. Its totient is φ = 201442420018.

The previous prime is 201442419923. The next prime is 201442420061. The reversal of 201442420019 is 910024244102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201442420019 is a prime.

It is a super-2 number, since 2×201442420019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201442419973 and 201442420000.

It is not a weakly prime, because it can be changed into another prime (201442420079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100721210009 + 100721210010.

It is an arithmetic number, because the mean of its divisors is an integer number (100721210010).

Almost surely, 2^201442420019 is an apocalyptic number.

201442420019 is a deficient number, since it is larger than the sum of its proper divisors (1).

201442420019 is an equidigital number, since it uses as much as digits as its factorization.

201442420019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 201442420019 in words is "two hundred one billion, four hundred forty-two million, four hundred twenty thousand, nineteen".