128102151 has 4 divisors (see below), whose sum is σ = 170802872. Its totient is φ = 85401432.

The previous prime is 128102131. The next prime is 128102171. The reversal of 128102151 is 151201821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151201821 = 3 ⋅50400607.

It is an interprime number because it is at equal distance from previous prime (128102131) and next prime (128102171).

It is not a de Polignac number, because 128102151 - 2¹⁷ = 127971079 is a prime.

It is a super-2 number, since 2×128102151² = 32820322181653602, 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 (128102101) 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, 21350356 + ... + 21350361.

It is an arithmetic number, because the mean of its divisors is an integer number (42700718).

Almost surely, 2^128102151 is an apocalyptic number.

128102151 is a deficient number, since it is larger than the sum of its proper divisors (42700721).

128102151 is an equidigital number, since it uses as much as digits as its factorization.

128102151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42700720.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 128102151 is about 11318.2220776940. Note that the first 3 decimals coincide. The cubic root of 128102151 is about 504.1024490967.

Adding to 128102151 its reverse (151201821), we get a palindrome (279303972).

The spelling of 128102151 in words is "one hundred twenty-eight million, one hundred two thousand, one hundred fifty-one".