7128072041 has 4 divisors (see below), whose sum is σ = 7145500500. Its totient is φ = 7110643584.

The previous prime is 7128072037. The next prime is 7128072043. The reversal of 7128072041 is 1402708217.

It is a happy number.

7128072041 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3184232041 + 3943840000 = 56429^2 + 62800^2 .

It is a cyclic number.

It is not a de Polignac number, because 7128072041 - 2² = 7128072037 is a prime.

It is a super-2 number, since 2×7128072041² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7128071989 and 7128072007.

It is not an unprimeable number, because it can be changed into a prime (7128072043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8713616 + ... + 8714433.

It is an arithmetic number, because the mean of its divisors is an integer number (1786375125).

Almost surely, 2^7128072041 is an apocalyptic number.

It is an amenable number.

7128072041 is a deficient number, since it is larger than the sum of its proper divisors (17428459).

7128072041 is a wasteful number, since it uses less digits than its factorization.

7128072041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17428458.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 7128072041 is about 84427.9103199884. The cubic root of 7128072041 is about 1924.5270815329.

The spelling of 7128072041 in words is "seven billion, one hundred twenty-eight million, seventy-two thousand, forty-one".