128670741 has 8 divisors (see below), whose sum is σ = 190623360. Its totient is φ = 85780476.

The previous prime is 128670721. The next prime is 128670781. The reversal of 128670741 is 147076821.

It is not a de Polignac number, because 128670741 - 2⁷ = 128670613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128670696 and 128670705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128670701) 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, 2382765 + ... + 2382818.

It is an arithmetic number, because the mean of its divisors is an integer number (23827920).

Almost surely, 2^128670741 is an apocalyptic number.

It is an amenable number.

128670741 is a deficient number, since it is larger than the sum of its proper divisors (61952619).

128670741 is an equidigital number, since it uses as much as digits as its factorization.

128670741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765592 (or 4765586 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 128670741 is about 11343.3126114024. The cubic root of 128670741 is about 504.8471791941.

It can be divided in two parts, 1286 and 70741, that added together give a palindrome (72027).

The spelling of 128670741 in words is "one hundred twenty-eight million, six hundred seventy thousand, seven hundred forty-one".