742253458545 has 40 divisors (see below), whose sum is σ = 1366519107624. Its totient is φ = 385169354496.

The previous prime is 742253458537. The next prime is 742253458547. The reversal of 742253458545 is 545854352247.

742253458545 is a `hidden beast` number, since 7 + 4 + 2 + 2 + 53 + 4 + 585 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 128262110769 + 613991347776 = 358137^2 + 783576^2 .

It is not a de Polignac number, because 742253458545 - 2³ = 742253458537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 742253458491 and 742253458500.

It is not an unprimeable number, because it can be changed into a prime (742253458547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24751564 + ... + 24781533.

Almost surely, 2^742253458545 is an apocalyptic number.

It is an amenable number.

742253458545 is a deficient number, since it is larger than the sum of its proper divisors (624265649079).

742253458545 is a wasteful number, since it uses less digits than its factorization.

742253458545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49533151 (or 49533142 counting only the distinct ones).

The product of its digits is 26880000, while the sum is 54.

The spelling of 742253458545 in words is "seven hundred forty-two billion, two hundred fifty-three million, four hundred fifty-eight thousand, five hundred forty-five".