242779128 has 32 divisors (see below), whose sum is σ = 608456400. Its totient is φ = 80725248.

The previous prime is 242779127. The next prime is 242779133. The reversal of 242779128 is 821977242.

It is a self number, because there is not a number n which added to its sum of digits gives 242779128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242779127) 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, 2551 + ... + 22182.

Almost surely, 2^242779128 is an apocalyptic number.

It is an amenable number.

242779128 is an abundant number, since it is smaller than the sum of its proper divisors (365677272).

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

242779128 is a wasteful number, since it uses less digits than its factorization.

242779128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25151 (or 25147 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 242779128 is about 15581.3711848476. The cubic root of 242779128 is about 623.8360228238.

The spelling of 242779128 in words is "two hundred forty-two million, seven hundred seventy-nine thousand, one hundred twenty-eight".