128263242 has 16 divisors (see below), whose sum is σ = 257355072. Its totient is φ = 42616320.

The previous prime is 128263237. The next prime is 128263273. The reversal of 128263242 is 242362821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32503 + ... + 36234.

It is an arithmetic number, because the mean of its divisors is an integer number (16084692).

Almost surely, 2^128263242 is an apocalyptic number.

128263242 is an abundant number, since it is smaller than the sum of its proper divisors (129091830).

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

128263242 is a wasteful number, since it uses less digits than its factorization.

128263242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69053.

The product of its digits is 9216, while the sum is 30.

The square root of 128263242 is about 11325.3362863979. The cubic root of 128263242 is about 504.3136668663.

The spelling of 128263242 in words is "one hundred twenty-eight million, two hundred sixty-three thousand, two hundred forty-two".