742672556571 has 32 divisors (see below), whose sum is σ = 1083354144768. Its totient is φ = 448812227840.

The previous prime is 742672556569. The next prime is 742672556581. The reversal of 742672556571 is 175655276247.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 742672556571 - 2¹ = 742672556569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742672556581) 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 31 ways as a sum of consecutive naturals, for example, 95003455 + ... + 95011271.

It is an arithmetic number, because the mean of its divisors is an integer number (33854817024).

Almost surely, 2^742672556571 is an apocalyptic number.

742672556571 is a deficient number, since it is larger than the sum of its proper divisors (340681588197).

742672556571 is a wasteful number, since it uses less digits than its factorization.

742672556571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15731.

The product of its digits is 24696000, while the sum is 57.

The spelling of 742672556571 in words is "seven hundred forty-two billion, six hundred seventy-two million, five hundred fifty-six thousand, five hundred seventy-one".