134128403 has 2 divisors, whose sum is σ = 134128404. Its totient is φ = 134128402.

The previous prime is 134128373. The next prime is 134128409. The reversal of 134128403 is 304821431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134128403 - 2²⁰ = 133079827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (134128409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67064201 + 67064202.

It is an arithmetic number, because the mean of its divisors is an integer number (67064202).

Almost surely, 2^134128403 is an apocalyptic number.

134128403 is a deficient number, since it is larger than the sum of its proper divisors (1).

134128403 is an equidigital number, since it uses as much as digits as its factorization.

134128403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 134128403 is about 11581.3817396717. The cubic root of 134128403 is about 511.8863921823.

Adding to 134128403 its reverse (304821431), we get a palindrome (438949834).

The spelling of 134128403 in words is "one hundred thirty-four million, one hundred twenty-eight thousand, four hundred three".