742305445 has 8 divisors (see below), whose sum is σ = 1018018944. Its totient is φ = 509009424.

The previous prime is 742305413. The next prime is 742305449. The reversal of 742305445 is 544503247.

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

It is not a de Polignac number, because 742305445 - 2⁵ = 742305413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742305445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742305449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10604329 + ... + 10604398.

It is an arithmetic number, because the mean of its divisors is an integer number (127252368).

Almost surely, 2^742305445 is an apocalyptic number.

It is an amenable number.

742305445 is a deficient number, since it is larger than the sum of its proper divisors (275713499).

742305445 is a wasteful number, since it uses less digits than its factorization.

742305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21208739.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 742305445 is about 27245.2829862345. The cubic root of 742305445 is about 905.4425132597.

The spelling of 742305445 in words is "seven hundred forty-two million, three hundred five thousand, four hundred forty-five".