422555123 has 2 divisors, whose sum is σ = 422555124. Its totient is φ = 422555122.

The previous prime is 422555101. The next prime is 422555137. The reversal of 422555123 is 321555224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 422555123 - 2¹² = 422551027 is a prime.

It is not a weakly prime, because it can be changed into another prime (422555173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211277561 + 211277562.

It is an arithmetic number, because the mean of its divisors is an integer number (211277562).

Almost surely, 2^422555123 is an apocalyptic number.

422555123 is a deficient number, since it is larger than the sum of its proper divisors (1).

422555123 is an equidigital number, since it uses as much as digits as its factorization.

422555123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 29.

The square root of 422555123 is about 20556.1456260652. The cubic root of 422555123 is about 750.4028194618.

The spelling of 422555123 in words is "four hundred twenty-two million, five hundred fifty-five thousand, one hundred twenty-three".