1137243 has 4 divisors (see below), whose sum is σ = 1516328. Its totient is φ = 758160.

The previous prime is 1137233. The next prime is 1137247. The reversal of 1137243 is 3427311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1137243 - 2⁶ = 1137179 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1137247) 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 3 ways as a sum of consecutive naturals, for example, 189538 + ... + 189543.

It is an arithmetic number, because the mean of its divisors is an integer number (379082).

2^1137243 is an apocalyptic number.

1137243 is a deficient number, since it is larger than the sum of its proper divisors (379085).

1137243 is an equidigital number, since it uses as much as digits as its factorization.

1137243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379084.

The product of its digits is 504, while the sum is 21.

The square root of 1137243 is about 1066.4159601206. The cubic root of 1137243 is about 104.3801117412.

The spelling of 1137243 in words is "one million, one hundred thirty-seven thousand, two hundred forty-three".