128377137 has 8 divisors (see below), whose sum is σ = 195622336. Its totient is φ = 73358352.

The previous prime is 128377127. The next prime is 128377141. The reversal of 128377137 is 731773821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128377137 - 2¹⁵ = 128344369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128377095 and 128377104.

It is not an unprimeable number, because it can be changed into a prime (128377127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056578 + ... + 3056619.

It is an arithmetic number, because the mean of its divisors is an integer number (24452792).

Almost surely, 2^128377137 is an apocalyptic number.

It is an amenable number.

128377137 is a deficient number, since it is larger than the sum of its proper divisors (67245199).

128377137 is an equidigital number, since it uses as much as digits as its factorization.

128377137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113207.

The product of its digits is 49392, while the sum is 39.

The square root of 128377137 is about 11330.3634981407. The cubic root of 128377137 is about 504.4628959338.

The spelling of 128377137 in words is "one hundred twenty-eight million, three hundred seventy-seven thousand, one hundred thirty-seven".