128962073 has 4 divisors (see below), whose sum is σ = 129903540. Its totient is φ = 128020608.

The previous prime is 128962061. The next prime is 128962079. The reversal of 128962073 is 370269821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370269821 = 15497 ⋅23893.

It can be written as a sum of positive squares in 2 ways, for example, as 39337984 + 89624089 = 6272^2 + 9467^2 .

It is a cyclic number.

It is not a de Polignac number, because 128962073 - 2¹⁸ = 128699929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128962079) 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 in 3 ways as a sum of consecutive naturals, for example, 470528 + ... + 470801.

It is an arithmetic number, because the mean of its divisors is an integer number (32475885).

Almost surely, 2^128962073 is an apocalyptic number.

It is an amenable number.

128962073 is a deficient number, since it is larger than the sum of its proper divisors (941467).

128962073 is an equidigital number, since it uses as much as digits as its factorization.

128962073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941466.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 128962073 is about 11356.1469257843. The cubic root of 128962073 is about 505.2279113729.

The spelling of 128962073 in words is "one hundred twenty-eight million, nine hundred sixty-two thousand, seventy-three".