7642239075 has 72 divisors (see below), whose sum is σ = 14847080976. Its totient is φ = 3742464000.

The previous prime is 7642239047. The next prime is 7642239089. The reversal of 7642239075 is 5709322467.

7642239075 is a `hidden beast` number, since 76 + 422 + 3 + 90 + 75 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-7642239075 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7642239075.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 132460 + ... + 181190.

It is an arithmetic number, because the mean of its divisors is an integer number (206209458).

Almost surely, 2^7642239075 is an apocalyptic number.

7642239075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7642239075 is a deficient number, since it is larger than the sum of its proper divisors (7204841901).

7642239075 is a wasteful number, since it uses less digits than its factorization.

7642239075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48805 (or 48797 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 7642239075 is about 87419.9009093467. The cubic root of 7642239075 is about 1969.7307881069.

The spelling of 7642239075 in words is "seven billion, six hundred forty-two million, two hundred thirty-nine thousand, seventy-five".