242128650 has 24 divisors (see below), whose sum is σ = 600479424. Its totient is φ = 64567600.

The previous prime is 242128633. The next prime is 242128661. The reversal of 242128650 is 56821242.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 806946 + ... + 807245.

It is an arithmetic number, because the mean of its divisors is an integer number (25019976).

Almost surely, 2^242128650 is an apocalyptic number.

242128650 is an abundant number, since it is smaller than the sum of its proper divisors (358350774).

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

242128650 is a wasteful number, since it uses less digits than its factorization.

242128650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614206 (or 1614201 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 242128650 is about 15560.4836043100. The cubic root of 242128650 is about 623.2783766419.

Adding to 242128650 its reverse (56821242), we get a palindrome (298949892).

The spelling of 242128650 in words is "two hundred forty-two million, one hundred twenty-eight thousand, six hundred fifty".