744742 has 4 divisors (see below), whose sum is σ = 1117116. Its totient is φ = 372370.

The previous prime is 744739. The next prime is 744761. The reversal of 744742 is 247447.

744742 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247447 = 97 ⋅2551.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 744742.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 186184 + ... + 186187.

It is an arithmetic number, because the mean of its divisors is an integer number (279279).

2⁷⁴⁴⁷⁴² is an apocalyptic number.

744742 is a deficient number, since it is larger than the sum of its proper divisors (372374).

744742 is a wasteful number, since it uses less digits than its factorization.

744742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372373.

The product of its digits is 6272, while the sum is 28.

The square root of 744742 is about 862.9843567528. The cubic root of 744742 is about 90.6432110846.

The spelling of 744742 in words is "seven hundred forty-four thousand, seven hundred forty-two", and thus it is an iban number.