128158703 has 2 divisors, whose sum is σ = 128158704. Its totient is φ = 128158702.

The previous prime is 128158687. The next prime is 128158721. The reversal of 128158703 is 307851821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128158703 - 2⁴ = 128158687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128158003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64079351 + 64079352.

It is an arithmetic number, because the mean of its divisors is an integer number (64079352).

Almost surely, 2^128158703 is an apocalyptic number.

128158703 is a deficient number, since it is larger than the sum of its proper divisors (1).

128158703 is an equidigital number, since it uses as much as digits as its factorization.

128158703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 128158703 is about 11320.7200742709. The cubic root of 128158703 is about 504.1766185712.

The spelling of 128158703 in words is "one hundred twenty-eight million, one hundred fifty-eight thousand, seven hundred three".