128303146 has 4 divisors (see below), whose sum is σ = 192454722. Its totient is φ = 64151572.

The previous prime is 128303107. The next prime is 128303159. The reversal of 128303146 is 641303821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83265625 + 45037521 = 9125^2 + 6711^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32075785 + ... + 32075788.

Almost surely, 2^128303146 is an apocalyptic number.

128303146 is a deficient number, since it is larger than the sum of its proper divisors (64151576).

128303146 is an equidigital number, since it uses as much as digits as its factorization.

128303146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64151575.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 128303146 is about 11327.0978630892. The cubic root of 128303146 is about 504.3659604818.

Adding to 128303146 its reverse (641303821), we get a palindrome (769606967).

The spelling of 128303146 in words is "one hundred twenty-eight million, three hundred three thousand, one hundred forty-six".