1156243 has 8 divisors (see below), whose sum is σ = 1269360. Its totient is φ = 1044480.

The previous prime is 1156231. The next prime is 1156249. The reversal of 1156243 is 3426511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1156243 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156249) 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, 2623 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (158670).

2^1156243 is an apocalyptic number.

1156243 is a deficient number, since it is larger than the sum of its proper divisors (113117).

1156243 is a wasteful number, since it uses less digits than its factorization.

1156243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 720, while the sum is 22.

The square root of 1156243 is about 1075.2874034415. The cubic root of 1156243 is about 104.9581995368.

The spelling of 1156243 in words is "one million, one hundred fifty-six thousand, two hundred forty-three".