422140427 has 2 divisors, whose sum is σ = 422140428. Its totient is φ = 422140426.

The previous prime is 422140403. The next prime is 422140441. The reversal of 422140427 is 724041224.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422140427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422140396 and 422140405.

It is not a weakly prime, because it can be changed into another prime (422140127) 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, 211070213 + 211070214.

It is an arithmetic number, because the mean of its divisors is an integer number (211070214).

Almost surely, 2^422140427 is an apocalyptic number.

422140427 is a deficient number, since it is larger than the sum of its proper divisors (1).

422140427 is an equidigital number, since it uses as much as digits as its factorization.

422140427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 422140427 is about 20546.0562395804. The cubic root of 422140427 is about 750.1572570987.

The spelling of 422140427 in words is "four hundred twenty-two million, one hundred forty thousand, four hundred twenty-seven".