1245243 has 8 divisors (see below), whose sum is σ = 1732608. Its totient is φ = 794024.

The previous prime is 1245227. The next prime is 1245281. The reversal of 1245243 is 3425421.

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

It is a cyclic number.

It is not a de Polignac number, because 1245243 - 2⁴ = 1245227 is a prime.

It is a d-powerful number, because it can be written as 1 + 2 + 4⁷ + 5⁵ + 2³ + 4¹⁰ + 3¹¹ .

It is not an unprimeable number, because it can be changed into a prime (1245943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8955 + ... + 9092.

It is an arithmetic number, because the mean of its divisors is an integer number (216576).

2^1245243 is an apocalyptic number.

1245243 is a deficient number, since it is larger than the sum of its proper divisors (487365).

1245243 is a wasteful number, since it uses less digits than its factorization.

1245243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18073.

The product of its digits is 960, while the sum is 21.

The square root of 1245243 is about 1115.9045658120. The cubic root of 1245243 is about 107.5849121799.

The spelling of 1245243 in words is "one million, two hundred forty-five thousand, two hundred forty-three".