128456146 has 24 divisors (see below), whose sum is σ = 241387020. Its totient is φ = 50817312.

The previous prime is 128456137. The next prime is 128456161. The reversal of 128456146 is 641654821.

128456146 = T₄₄₃₉ + T₄₄₄₀ + ... + T₄₄₅₁.

It can be written as a sum of positive squares in 2 ways, for example, as 99780121 + 28676025 = 9989^2 + 5355^2 .

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 in 11 ways as a sum of consecutive naturals, for example, 49141 + ... + 51688.

Almost surely, 2^128456146 is an apocalyptic number.

128456146 is a deficient number, since it is larger than the sum of its proper divisors (112930874).

128456146 is a wasteful number, since it uses less digits than its factorization.

128456146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100858 (or 100851 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 128456146 is about 11333.8495666742. The cubic root of 128456146 is about 504.5663643448.

The spelling of 128456146 in words is "one hundred twenty-eight million, four hundred fifty-six thousand, one hundred forty-six".