1423217 has 4 divisors (see below), whose sum is σ = 1485120. Its totient is φ = 1361316.

The previous prime is 1423193. The next prime is 1423231. The reversal of 1423217 is 7123241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7123241 = 29 ⋅245629.

It is a cyclic number.

It is not a de Polignac number, because 1423217 - 2⁸ = 1422961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423237) 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, 30917 + ... + 30962.

It is an arithmetic number, because the mean of its divisors is an integer number (371280).

2^1423217 is an apocalyptic number.

It is an amenable number.

1423217 is a deficient number, since it is larger than the sum of its proper divisors (61903).

1423217 is an equidigital number, since it uses as much as digits as its factorization.

1423217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61902.

The product of its digits is 336, while the sum is 20.

The square root of 1423217 is about 1192.9865883571. The cubic root of 1423217 is about 112.4839022234.

Adding to 1423217 its reverse (7123241), we get a palindrome (8546458).

The spelling of 1423217 in words is "one million, four hundred twenty-three thousand, two hundred seventeen".