1356243 has 32 divisors (see below), whose sum is σ = 2280960. Its totient is φ = 698880.

The previous prime is 1356227. The next prime is 1356247. The reversal of 1356243 is 3426531.

It is a happy number.

It is not a de Polignac number, because 1356243 - 2⁴ = 1356227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1356247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10288 + ... + 10418.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2^1356243 is an apocalyptic number.

1356243 is a deficient number, since it is larger than the sum of its proper divisors (924717).

1356243 is a wasteful number, since it uses less digits than its factorization.

1356243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187.

The product of its digits is 2160, while the sum is 24.

The square root of 1356243 is about 1164.5784645098. The cubic root of 1356243 is about 110.6910490058.

The spelling of 1356243 in words is "one million, three hundred fifty-six thousand, two hundred forty-three".