742556188089 has 9 divisors (see below), whose sum is σ = 1072584894693. Its totient is φ = 495035735292.

The previous prime is 742556188067. The next prime is 742556188109. The reversal of 742556188089 is 980881655247.

The square root of 742556188089 is 861717.

It is a perfect power (a square), and thus also a powerful number.

742556188089 is a `hidden beast` number, since 7 + 4 + 2 + 5 + 5 + 618 + 8 + 0 + 8 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 742556188089 - 2⁹ = 742556187577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742556188009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2441532 + ... + 2728770.

Almost surely, 2^742556188089 is an apocalyptic number.

742556188089 is the 861717-th square number.

742556188089 is the 430859-th centered octagonal number.

It is an amenable number.

742556188089 is a deficient number, since it is larger than the sum of its proper divisors (330028706604).

742556188089 is an frugal number, since it uses more digits than its factorization.

742556188089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574484 (or 287242 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 63.

The spelling of 742556188089 in words is "seven hundred forty-two billion, five hundred fifty-six million, one hundred eighty-eight thousand, eighty-nine".