742545194689 has 4 divisors (see below), whose sum is σ = 744672831700. Its totient is φ = 740417557680.

The previous prime is 742545194681. The next prime is 742545194723. The reversal of 742545194689 is 986491545247.

742545194689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 403714098225 + 338831096464 = 635385^2 + 582092^2 .

It is a cyclic number.

It is not a de Polignac number, because 742545194689 - 2³ = 742545194681 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 742545194689.

It is not an unprimeable number, because it can be changed into a prime (742545194681) 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, 1063817982 + ... + 1063818679.

It is an arithmetic number, because the mean of its divisors is an integer number (186168207925).

Almost surely, 2^742545194689 is an apocalyptic number.

It is an amenable number.

742545194689 is a deficient number, since it is larger than the sum of its proper divisors (2127637011).

742545194689 is a wasteful number, since it uses less digits than its factorization.

742545194689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127637010.

The product of its digits is 87091200, while the sum is 64.

The spelling of 742545194689 in words is "seven hundred forty-two billion, five hundred forty-five million, one hundred ninety-four thousand, six hundred eighty-nine".