128492302 has 4 divisors (see below), whose sum is σ = 192738456. Its totient is φ = 64246150.

The previous prime is 128492293. The next prime is 128492327. The reversal of 128492302 is 203294821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 203294821 = 2477 ⋅82073.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32123074 + ... + 32123077.

It is an arithmetic number, because the mean of its divisors is an integer number (48184614).

Almost surely, 2^128492302 is an apocalyptic number.

128492302 is a deficient number, since it is larger than the sum of its proper divisors (64246154).

128492302 is an equidigital number, since it uses as much as digits as its factorization.

128492302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64246153.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 128492302 is about 11335.4444994451. Note that the first 4 decimals coincide. The cubic root of 128492302 is about 504.6136992803.

It can be divided in two parts, 12849 and 2302, that added together give a palindrome (15151).

The spelling of 128492302 in words is "one hundred twenty-eight million, four hundred ninety-two thousand, three hundred two".