740249 has 4 divisors (see below), whose sum is σ = 764160. Its totient is φ = 716340.

The previous prime is 740237. The next prime is 740279. The reversal of 740249 is 942047.

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, and also an emirpimes, since its reverse is a distinct semiprime: 942047 = 167 ⋅5641.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-740249 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 740249.

It is not an unprimeable number, because it can be changed into a prime (740279) 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, 11909 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (191040).

2⁷⁴⁰²⁴⁹ is an apocalyptic number.

It is an amenable number.

740249 is a deficient number, since it is larger than the sum of its proper divisors (23911).

740249 is a wasteful number, since it uses less digits than its factorization.

740249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23910.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 740249 is about 860.3772428418. The cubic root of 740249 is about 90.4605609418.

It can be divided in two parts, 740 and 249, that added together give a palindrome (989).

The spelling of 740249 in words is "seven hundred forty thousand, two hundred forty-nine".