1222539 has 8 divisors (see below), whose sum is σ = 1657920. Its totient is φ = 801096.

The previous prime is 1222537. The next prime is 1222561. The reversal of 1222539 is 9352221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222539 - 2¹ = 1222537 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1222537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3277 + ... + 3630.

It is an arithmetic number, because the mean of its divisors is an integer number (207240).

2^1222539 is an apocalyptic number.

1222539 is a deficient number, since it is larger than the sum of its proper divisors (435381).

1222539 is an equidigital number, since it uses as much as digits as its factorization.

1222539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6969.

The product of its digits is 1080, while the sum is 24.

The square root of 1222539 is about 1105.6848556438. The cubic root of 1222539 is about 106.9270472528.

The spelling of 1222539 in words is "one million, two hundred twenty-two thousand, five hundred thirty-nine".