7128422450 has 12 divisors (see below), whose sum is σ = 13258865850. Its totient is φ = 2851368960.

The previous prime is 7128422447. The next prime is 7128422467. The reversal of 7128422450 is 542248217.

It can be written as a sum of positive squares in 3 ways, for example, as 6263297881 + 865124569 = 79141^2 + 29413^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7128422450.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71284175 + ... + 71284274.

Almost surely, 2^7128422450 is an apocalyptic number.

7128422450 is a deficient number, since it is larger than the sum of its proper divisors (6130443400).

7128422450 is a wasteful number, since it uses less digits than its factorization.

7128422450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142568461 (or 142568456 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 7128422450 is about 84429.9854909380. The cubic root of 7128422450 is about 1924.5586169680.

The spelling of 7128422450 in words is "seven billion, one hundred twenty-eight million, four hundred twenty-two thousand, four hundred fifty".