128142618 has 16 divisors (see below), whose sum is σ = 263212320. Its totient is φ = 41559696.

The previous prime is 128142611. The next prime is 128142649. The reversal of 128142618 is 816241821.

It is not an unprimeable number, because it can be changed into a prime (128142611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288388 + ... + 288831.

It is an arithmetic number, because the mean of its divisors is an integer number (16450770).

Almost surely, 2^128142618 is an apocalyptic number.

128142618 is an abundant number, since it is smaller than the sum of its proper divisors (135069702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128142618 is a wasteful number, since it uses less digits than its factorization.

128142618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577261.

The product of its digits is 6144, while the sum is 33.

The square root of 128142618 is about 11320.0096289712. The cubic root of 128142618 is about 504.1555248803.

It can be divided in two parts, 12 and 8142618, that added together give a triangular number (8142630 = T₄₀₃₅).

The spelling of 128142618 in words is "one hundred twenty-eight million, one hundred forty-two thousand, six hundred eighteen".