128850937 has 2 divisors, whose sum is σ = 128850938. Its totient is φ = 128850936.

The previous prime is 128850901. The next prime is 128850941. The reversal of 128850937 is 739058821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113827561 + 15023376 = 10669^2 + 3876^2 .

It is an emirp because it is prime and its reverse (739058821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128850937 - 2⁷ = 128850809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128850893 and 128850902.

It is not a weakly prime, because it can be changed into another prime (128854937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64425468 + 64425469.

It is an arithmetic number, because the mean of its divisors is an integer number (64425469).

Almost surely, 2^128850937 is an apocalyptic number.

It is an amenable number.

128850937 is a deficient number, since it is larger than the sum of its proper divisors (1).

128850937 is an equidigital number, since it uses as much as digits as its factorization.

128850937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 128850937 is about 11351.2526621514. The cubic root of 128850937 is about 505.0827391146.

It can be divided in two parts, 1288 and 50937, that added together give a palindrome (52225).

The spelling of 128850937 in words is "one hundred twenty-eight million, eight hundred fifty thousand, nine hundred thirty-seven".