128264137 has 2 divisors, whose sum is σ = 128264138. Its totient is φ = 128264136.

The previous prime is 128264119. The next prime is 128264173. The reversal of 128264137 is 731462821.

Together with next prime (128264173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89189136 + 39075001 = 9444^2 + 6251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128264137 is a prime.

It is a pancake number, because a pancake can be divided into 128264137 parts by 16016 straight cuts.

It is equal to p_7285192 and since 128264137 and 7285192 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (128264107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64132068 + 64132069.

It is an arithmetic number, because the mean of its divisors is an integer number (64132069).

Almost surely, 2^128264137 is an apocalyptic number.

It is an amenable number.

128264137 is a deficient number, since it is larger than the sum of its proper divisors (1).

128264137 is an equidigital number, since it uses as much as digits as its factorization.

128264137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 128264137 is about 11325.3757995044. The cubic root of 128264137 is about 504.3148398698.

The spelling of 128264137 in words is "one hundred twenty-eight million, two hundred sixty-four thousand, one hundred thirty-seven".