726272144765242 has 8 divisors (see below), whose sum is σ = 1092844836130356. Its totient is φ = 361990532721792.

The previous prime is 726272144765183. The next prime is 726272144765257. The reversal of 726272144765242 is 242567441272627.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 581269870792521 + 145002273972721 = 24109539^2 + 12041689^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 572769829623 + ... + 572769830890.

Almost surely, 2^{726272144765242} is an apocalyptic number.

726272144765242 is a deficient number, since it is larger than the sum of its proper divisors (366572691365114).

726272144765242 is a wasteful number, since it uses less digits than its factorization.

726272144765242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145539660832.

The product of its digits is 126443520, while the sum is 61.

The spelling of 726272144765242 in words is "seven hundred twenty-six trillion, two hundred seventy-two billion, one hundred forty-four million, seven hundred sixty-five thousand, two hundred forty-two".