100128751 has 2 divisors, whose sum is σ = 100128752. Its totient is φ = 100128750.

The previous prime is 100128733. The next prime is 100128773. The reversal of 100128751 is 157821001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100128751 - 2⁵ = 100128719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100128551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50064375 + 50064376.

It is an arithmetic number, because the mean of its divisors is an integer number (50064376).

Almost surely, 2^100128751 is an apocalyptic number.

100128751 is a deficient number, since it is larger than the sum of its proper divisors (1).

100128751 is an equidigital number, since it uses as much as digits as its factorization.

100128751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 100128751 is about 10006.4354792304. The cubic root of 100128751 is about 464.3580009984.

Adding to 100128751 its reverse (157821001), we get a palindrome (257949752).

The spelling of 100128751 in words is "one hundred million, one hundred twenty-eight thousand, seven hundred fifty-one".