128072041 has 4 divisors (see below), whose sum is σ = 129983632. Its totient is φ = 126160452.

The previous prime is 128072023. The next prime is 128072083. The reversal of 128072041 is 140270821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 140270821 = 977 ⋅143573.

It is a cyclic number.

It is not a de Polignac number, because 128072041 - 2¹³ = 128063849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128071997 and 128072015.

It is not an unprimeable number, because it can be changed into a prime (128072341) 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, 955695 + ... + 955828.

It is an arithmetic number, because the mean of its divisors is an integer number (32495908).

Almost surely, 2^128072041 is an apocalyptic number.

It is an amenable number.

128072041 is a deficient number, since it is larger than the sum of its proper divisors (1911591).

128072041 is an equidigital number, since it uses as much as digits as its factorization.

128072041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911590.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 128072041 is about 11316.8918436115. The cubic root of 128072041 is about 504.0629501135.

The spelling of 128072041 in words is "one hundred twenty-eight million, seventy-two thousand, forty-one".