742844249 has 4 divisors (see below), whose sum is σ = 848964864. Its totient is φ = 636723636.

The previous prime is 742844231. The next prime is 742844281. The reversal of 742844249 is 942448247.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742844249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742844299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53060297 + ... + 53060310.

It is an arithmetic number, because the mean of its divisors is an integer number (212241216).

Almost surely, 2^742844249 is an apocalyptic number.

It is an amenable number.

742844249 is a deficient number, since it is larger than the sum of its proper divisors (106120615).

742844249 is a wasteful number, since it uses less digits than its factorization.

742844249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106120614.

The product of its digits is 516096, while the sum is 44.

The square root of 742844249 is about 27255.1692161322. The cubic root of 742844249 is about 905.6615327400.

The spelling of 742844249 in words is "seven hundred forty-two million, eight hundred forty-four thousand, two hundred forty-nine".