128458403 has 2 divisors, whose sum is σ = 128458404. Its totient is φ = 128458402.

The previous prime is 128458397. The next prime is 128458423. The reversal of 128458403 is 304854821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128458403 - 2²⁶ = 61349539 is a prime.

It is a super-2 number, since 2×128458403² = 33003122602620818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128458423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64229201 + 64229202.

It is an arithmetic number, because the mean of its divisors is an integer number (64229202).

Almost surely, 2^128458403 is an apocalyptic number.

128458403 is a deficient number, since it is larger than the sum of its proper divisors (1).

128458403 is an equidigital number, since it uses as much as digits as its factorization.

128458403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 128458403 is about 11333.9491352308. The cubic root of 128458403 is about 504.5693194379.

The spelling of 128458403 in words is "one hundred twenty-eight million, four hundred fifty-eight thousand, four hundred three".