1422518 has 4 divisors (see below), whose sum is σ = 2133780. Its totient is φ = 711258.

The previous prime is 1422493. The next prime is 1422521. The reversal of 1422518 is 8152241.

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

It is a junction number, because it is equal to n+sod(n) for n = 1422493 and 1422502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355628 + ... + 355631.

It is an arithmetic number, because the mean of its divisors is an integer number (533445).

2^1422518 is an apocalyptic number.

1422518 is a deficient number, since it is larger than the sum of its proper divisors (711262).

1422518 is an equidigital number, since it uses as much as digits as its factorization.

1422518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711261.

The product of its digits is 640, while the sum is 23.

The square root of 1422518 is about 1192.6935901563. The cubic root of 1422518 is about 112.4654840615.

Adding to 1422518 its reverse (8152241), we get a palindrome (9574759).

The spelling of 1422518 in words is "one million, four hundred twenty-two thousand, five hundred eighteen".