749242 has 8 divisors (see below), whose sum is σ = 1210356. Its totient is φ = 345792.

The previous prime is 749237. The next prime is 749249. The reversal of 749242 is 242947.

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 7921 = 861^2 + 89^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×749242² = 1122727149128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749242.

It is not an unprimeable number, because it can be changed into a prime (749249) by changing a digit.

749242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 14383 + ... + 14434.

2⁷⁴⁹²⁴² is an apocalyptic number.

749242 is a deficient number, since it is larger than the sum of its proper divisors (461114).

749242 is a wasteful number, since it uses less digits than its factorization.

749242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28832.

The product of its digits is 4032, while the sum is 28.

The square root of 749242 is about 865.5876616496. The cubic root of 749242 is about 90.8254109373.

It can be divided in two parts, 74 and 9242, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 749242 in words is "seven hundred forty-nine thousand, two hundred forty-two".