747243 has 24 divisors (see below), whose sum is σ = 1279200. Its totient is φ = 411264.

The previous prime is 747239. The next prime is 747259. The reversal of 747243 is 342747.

It is not a de Polignac number, because 747243 - 2² = 747239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (747203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1623 + ... + 2031.

It is an arithmetic number, because the mean of its divisors is an integer number (53300).

2⁷⁴⁷²⁴³ is an apocalyptic number.

747243 is a deficient number, since it is larger than the sum of its proper divisors (531957).

747243 is a wasteful number, since it uses less digits than its factorization.

747243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its digits is 4704, while the sum is 27.

The square root of 747243 is about 864.4321835749. The cubic root of 747243 is about 90.7445640256.

Subtracting from 747243 its reverse (342747), we obtain a square (404496 = 636²).

It can be divided in two parts, 747 and 243, that added together give a triangular number (990 = T₄₄).

The spelling of 747243 in words is "seven hundred forty-seven thousand, two hundred forty-three", and thus it is an iban number.