128942418 has 16 divisors (see below), whose sum is σ = 281329056. Its totient is φ = 39073440.

The previous prime is 128942353. The next prime is 128942419. The reversal of 128942418 is 814249821.

It is a super-2 number, since 2×128942418² = 33252294319373448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128942419) 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, 976771 + ... + 976902.

It is an arithmetic number, because the mean of its divisors is an integer number (17583066).

Almost surely, 2^128942418 is an apocalyptic number.

128942418 is an abundant number, since it is smaller than the sum of its proper divisors (152386638).

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

128942418 is a wasteful number, since it uses less digits than its factorization.

128942418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953689.

The product of its digits is 36864, while the sum is 39.

The square root of 128942418 is about 11355.2815024551. The cubic root of 128942418 is about 505.2022429499.

The spelling of 128942418 in words is "one hundred twenty-eight million, nine hundred forty-two thousand, four hundred eighteen".