422840557 has 8 divisors (see below), whose sum is σ = 427847616. Its totient is φ = 417846912.

The previous prime is 422840501. The next prime is 422840597. The reversal of 422840557 is 755048224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422840557 - 2¹⁹ = 422316269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422840597) 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 in 7 ways as a sum of consecutive naturals, for example, 69138 + ... + 75004.

It is an arithmetic number, because the mean of its divisors is an integer number (53480952).

Almost surely, 2^422840557 is an apocalyptic number.

It is an amenable number.

422840557 is a deficient number, since it is larger than the sum of its proper divisors (5007059).

422840557 is an equidigital number, since it uses as much as digits as its factorization.

422840557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707.

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 422840557 is about 20563.0872438941. The cubic root of 422840557 is about 750.5717459573.

The spelling of 422840557 in words is "four hundred twenty-two million, eight hundred forty thousand, five hundred fifty-seven".