1422743 has 4 divisors (see below), whose sum is σ = 1626000. Its totient is φ = 1219488.

The previous prime is 1422727. The next prime is 1422749. The reversal of 1422743 is 3472241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3472241 = 23 ⋅150967.

It is a cyclic number.

It is not a de Polignac number, because 1422743 - 2⁴ = 1422727 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 (1422749) 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 3 ways as a sum of consecutive naturals, for example, 101618 + ... + 101631.

It is an arithmetic number, because the mean of its divisors is an integer number (406500).

2^1422743 is an apocalyptic number.

1422743 is a deficient number, since it is larger than the sum of its proper divisors (203257).

1422743 is an equidigital number, since it uses as much as digits as its factorization.

1422743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203256.

The product of its digits is 1344, while the sum is 23.

The square root of 1422743 is about 1192.7879107369. The cubic root of 1422743 is about 112.4714133128.

Adding to 1422743 its reverse (3472241), we get a palindrome (4894984).

The spelling of 1422743 in words is "one million, four hundred twenty-two thousand, seven hundred forty-three".