1423247 has 4 divisors (see below), whose sum is σ = 1626576. Its totient is φ = 1219920.

The previous prime is 1423243. The next prime is 1423259. The reversal of 1423247 is 7423241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7423241 = 7 ⋅1060463.

It is a cyclic number.

It is not a de Polignac number, because 1423247 - 2² = 1423243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423243) 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, 101654 + ... + 101667.

It is an arithmetic number, because the mean of its divisors is an integer number (406644).

2^1423247 is an apocalyptic number.

1423247 is a deficient number, since it is larger than the sum of its proper divisors (203329).

1423247 is an equidigital number, since it uses as much as digits as its factorization.

1423247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203328.

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

The square root of 1423247 is about 1192.9991617767. Note that the first 3 decimals coincide. The cubic root of 1423247 is about 112.4846925675.

Adding to 1423247 its reverse (7423241), we get a palindrome (8846488).

The spelling of 1423247 in words is "one million, four hundred twenty-three thousand, two hundred forty-seven".