4243249 has 4 divisors (see below), whose sum is σ = 4380160. Its totient is φ = 4106340.

The previous prime is 4243243. The next prime is 4243279. The reversal of 4243249 is 9423424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4243249 - 2⁷ = 4243121 is a prime.

It is a Duffinian number.

4243249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4243243) 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, 68409 + ... + 68470.

It is an arithmetic number, because the mean of its divisors is an integer number (1095040).

Almost surely, 2^4243249 is an apocalyptic number.

It is an amenable number.

4243249 is a deficient number, since it is larger than the sum of its proper divisors (136911).

4243249 is a wasteful number, since it uses less digits than its factorization.

4243249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136910.

The product of its digits is 6912, while the sum is 28.

The square root of 4243249 is about 2059.9148040635. The cubic root of 4243249 is about 161.8947774765.

It can be divided in two parts, 4 and 243249, that added together give a triangular number (243253 = T₆₉₇).

The spelling of 4243249 in words is "four million, two hundred forty-three thousand, two hundred forty-nine".