1243229 has 4 divisors (see below), whose sum is σ = 1338876. Its totient is φ = 1147584.

The previous prime is 1243211. The next prime is 1243271. The reversal of 1243229 is 9223421.

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 + 1060900 = 427^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243229 - 2²⁰ = 194653 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁰ + 4² + 3¹¹ + 2¹⁴ + 2²⁰ + 9² .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243129) 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, 47804 + ... + 47829.

It is an arithmetic number, because the mean of its divisors is an integer number (334719).

2^1243229 is an apocalyptic number.

It is an amenable number.

1243229 is a deficient number, since it is larger than the sum of its proper divisors (95647).

1243229 is an equidigital number, since it uses as much as digits as its factorization.

1243229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95646.

The product of its digits is 864, while the sum is 23.

The square root of 1243229 is about 1115.0017937205. The cubic root of 1243229 is about 107.5268798836.

The spelling of 1243229 in words is "one million, two hundred forty-three thousand, two hundred twenty-nine".