7247128141 has 6 divisors (see below), whose sum is σ = 7965851726. Its totient is φ = 6588298200.

The previous prime is 7247128139. The next prime is 7247128177. The reversal of 7247128141 is 1418217427.

It can be written as a sum of positive squares in only one way, i.e., 7148026116 + 99102025 = 84546^2 + 9955^2 .

It is not a de Polignac number, because 7247128141 - 2¹ = 7247128139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7247128141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7247128741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29946690 + ... + 29946931.

Almost surely, 2^7247128141 is an apocalyptic number.

It is an amenable number.

7247128141 is a deficient number, since it is larger than the sum of its proper divisors (718723585).

7247128141 is a wasteful number, since it uses less digits than its factorization.

7247128141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59893643 (or 59893632 counting only the distinct ones).

The product of its digits is 25088, while the sum is 37.

The square root of 7247128141 is about 85130.0660225281. The cubic root of 7247128141 is about 1935.1827322662.

The spelling of 7247128141 in words is "seven billion, two hundred forty-seven million, one hundred twenty-eight thousand, one hundred forty-one".