749842 has 8 divisors (see below), whose sum is σ = 1155276. Its totient is φ = 364752.

The previous prime is 749809. The next prime is 749843. The reversal of 749842 is 248947.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 641601 + 108241 = 801^2 + 329^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 749798 and 749807.

It is not an unprimeable number, because it can be changed into a prime (749843) by changing a digit.

749842 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4993 + ... + 5140.

2⁷⁴⁹⁸⁴² is an apocalyptic number.

749842 is a deficient number, since it is larger than the sum of its proper divisors (405434).

749842 is a wasteful number, since it uses less digits than its factorization.

749842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172.

The product of its digits is 16128, while the sum is 34.

The square root of 749842 is about 865.9341776371. The cubic root of 749842 is about 90.8496490812.

The spelling of 749842 in words is "seven hundred forty-nine thousand, eight hundred forty-two".