1317922 has 4 divisors (see below), whose sum is σ = 1976886. Its totient is φ = 658960.

The previous prime is 1317917. The next prime is 1317929. The reversal of 1317922 is 2297131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2297131 = 31 ⋅74101.

It can be written as a sum of positive squares in only one way, i.e., 1058841 + 259081 = 1029^2 + 509^2 .

It is not an unprimeable number, because it can be changed into a prime (1317929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329479 + ... + 329482.

2^1317922 is an apocalyptic number.

1317922 is a deficient number, since it is larger than the sum of its proper divisors (658964).

1317922 is an equidigital number, since it uses as much as digits as its factorization.

1317922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658963.

The product of its digits is 756, while the sum is 25.

The square root of 1317922 is about 1148.0078396945. The cubic root of 1317922 is about 109.6385380485.

The spelling of 1317922 in words is "one million, three hundred seventeen thousand, nine hundred twenty-two".