128179242 has 24 divisors (see below), whose sum is σ = 278522244. Its totient is φ = 42603264.

The previous prime is 128179237. The next prime is 128179273. The reversal of 128179242 is 242971821.

It can be written as a sum of positive squares in 2 ways, for example, as 115154361 + 13024881 = 10731^2 + 3609^2 .

It is a super-3 number, since 3×128179242³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128179197 and 128179206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3733 + ... + 16440.

Almost surely, 2^128179242 is an apocalyptic number.

128179242 is an abundant number, since it is smaller than the sum of its proper divisors (150343002).

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

128179242 is a wasteful number, since it uses less digits than its factorization.

128179242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20534 (or 20531 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 128179242 is about 11321.6271798713. The cubic root of 128179242 is about 504.2035506229.

The spelling of 128179242 in words is "one hundred twenty-eight million, one hundred seventy-nine thousand, two hundred forty-two".