128142103 has 4 divisors (see below), whose sum is σ = 128173968. Its totient is φ = 128110240.

The previous prime is 128142059. The next prime is 128142109. The reversal of 128142103 is 301241821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301241821 = 29 ⋅10387649.

It is a cyclic number.

It is not a de Polignac number, because 128142103 - 2²⁵ = 94587671 is a prime.

It is a super-2 number, since 2×128142103² = 32840797122525218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128142109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8851 + ... + 18292.

It is an arithmetic number, because the mean of its divisors is an integer number (32043492).

Almost surely, 2^128142103 is an apocalyptic number.

128142103 is a deficient number, since it is larger than the sum of its proper divisors (31865).

128142103 is an equidigital number, since it uses as much as digits as its factorization.

128142103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31864.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 128142103 is about 11319.9868816178. The cubic root of 128142103 is about 504.1548494859.

Adding to 128142103 its reverse (301241821), we get a palindrome (429383924).

The spelling of 128142103 in words is "one hundred twenty-eight million, one hundred forty-two thousand, one hundred three".