1247353 has 4 divisors (see below), whose sum is σ = 1252260. Its totient is φ = 1242448.

The previous prime is 1247329. The next prime is 1247371. The reversal of 1247353 is 3537421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182329 + 1065024 = 427^2 + 1032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247353 - 2⁵ = 1247321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247303) 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, 2050 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (313065).

2^1247353 is an apocalyptic number.

It is an amenable number.

1247353 is a deficient number, since it is larger than the sum of its proper divisors (4907).

1247353 is an equidigital number, since it uses as much as digits as its factorization.

1247353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906.

The product of its digits is 2520, while the sum is 25.

The square root of 1247353 is about 1116.8495870080. The cubic root of 1247353 is about 107.6456435846.

It can be divided in two parts, 1247 and 353, that added together give a square (1600 = 40²).

The spelling of 1247353 in words is "one million, two hundred forty-seven thousand, three hundred fifty-three".