1422719 has 4 divisors (see below), whose sum is σ = 1425144. Its totient is φ = 1420296.

The previous prime is 1422709. The next prime is 1422721. The reversal of 1422719 is 9172241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1422719 - 2¹⁶ = 1357183 is a prime.

It is a super-2 number, since 2×1422719² = 4048258705922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 1710.

It is an arithmetic number, because the mean of its divisors is an integer number (356286).

2^1422719 is an apocalyptic number.

1422719 is a deficient number, since it is larger than the sum of its proper divisors (2425).

1422719 is an equidigital number, since it uses as much as digits as its factorization.

1422719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424.

The product of its digits is 1008, while the sum is 26.

The square root of 1422719 is about 1192.7778502303. Note that the first 3 decimals coincide. The cubic root of 1422719 is about 112.4707808891.

The spelling of 1422719 in words is "one million, four hundred twenty-two thousand, seven hundred nineteen".