1247722 has 8 divisors (see below), whose sum is σ = 2138976. Its totient is φ = 534732.

The previous prime is 1247699. The next prime is 1247737. The reversal of 1247722 is 2277421.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44548 + ... + 44575.

It is an arithmetic number, because the mean of its divisors is an integer number (267372).

2^1247722 is an apocalyptic number.

1247722 is a deficient number, since it is larger than the sum of its proper divisors (891254).

1247722 is an equidigital number, since it uses as much as digits as its factorization.

1247722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89132.

The product of its digits is 1568, while the sum is 25.

The square root of 1247722 is about 1117.0147716123. The cubic root of 1247722 is about 107.6562573473.

The spelling of 1247722 in words is "one million, two hundred forty-seven thousand, seven hundred twenty-two".