1247233 has 8 divisors (see below), whose sum is σ = 1380008. Its totient is φ = 1119744.

The previous prime is 1247231. The next prime is 1247243. The reversal of 1247233 is 3327421.

It can be written as a sum of positive squares in 4 ways, for example, as 263169 + 984064 = 513^2 + 992^2 .

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

It is a 7-Lehmer number, since φ(1247233) divides (1247233-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 1247233 - 2¹ = 1247231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816 + ... + 1777.

It is an arithmetic number, because the mean of its divisors is an integer number (172501).

It is a Proth number, since it is equal to 609 ⋅ 2¹¹ + 1 and 609 < 2¹¹.

2^1247233 is an apocalyptic number.

1247233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1247233 is a deficient number, since it is larger than the sum of its proper divisors (132775).

1247233 is a wasteful number, since it uses less digits than its factorization.

1247233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643.

The product of its digits is 1008, while the sum is 22.

The square root of 1247233 is about 1116.7958631729. The cubic root of 1247233 is about 107.6421915034.

The spelling of 1247233 in words is "one million, two hundred forty-seven thousand, two hundred thirty-three".