4091243 has 4 divisors (see below), whose sum is σ = 4405968. Its totient is φ = 3776520.

The previous prime is 4091239. The next prime is 4091249. The reversal of 4091243 is 3421904.

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

It is a cyclic number.

It is not a de Polignac number, because 4091243 - 2² = 4091239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4091249) 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, 157343 + ... + 157368.

It is an arithmetic number, because the mean of its divisors is an integer number (1101492).

Almost surely, 2^4091243 is an apocalyptic number.

4091243 is a deficient number, since it is larger than the sum of its proper divisors (314725).

4091243 is a wasteful number, since it uses less digits than its factorization.

4091243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314724.

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

The square root of 4091243 is about 2022.6821302419. The cubic root of 4091243 is about 159.9380359017.

It can be divided in two parts, 4091 and 243, that added together give a palindrome (4334).

The spelling of 4091243 in words is "four million, ninety-one thousand, two hundred forty-three".