422500109 has 2 divisors, whose sum is σ = 422500110. Its totient is φ = 422500108.

The previous prime is 422500103. The next prime is 422500123. The reversal of 422500109 is 901005224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404412100 + 18088009 = 20110^2 + 4253^2 .

It is a cyclic number.

It is not a de Polignac number, because 422500109 - 2⁸ = 422499853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422500103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211250054 + 211250055.

It is an arithmetic number, because the mean of its divisors is an integer number (211250055).

Almost surely, 2^422500109 is an apocalyptic number.

It is an amenable number.

422500109 is a deficient number, since it is larger than the sum of its proper divisors (1).

422500109 is an equidigital number, since it uses as much as digits as its factorization.

422500109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 422500109 is about 20554.8074425425. The cubic root of 422500109 is about 750.3702521507.

The spelling of 422500109 in words is "four hundred twenty-two million, five hundred thousand, one hundred nine".