422719 has 8 divisors (see below), whose sum is σ = 467712. Its totient is φ = 378840.

The previous prime is 422711. The next prime is 422749. The reversal of 422719 is 917224.

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

It is not a de Polignac number, because 422719 - 2³ = 422711 is a prime.

It is a super-2 number, since 2×422719² = 357382705922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 422693 and 422702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422711) 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, 682 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (58464).

2⁴²²⁷¹⁹ is an apocalyptic number.

422719 is a deficient number, since it is larger than the sum of its proper divisors (44993).

422719 is a wasteful number, since it uses less digits than its factorization.

422719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557.

The product of its digits is 1008, while the sum is 25.

The square root of 422719 is about 650.1684397139. The cubic root of 422719 is about 75.0499814987.

The spelling of 422719 in words is "four hundred twenty-two thousand, seven hundred nineteen".