242239998 has 128 divisors (see below), whose sum is σ = 663634944. Its totient is φ = 56908800.

The previous prime is 242239997. The next prime is 242240039. The reversal of 242239998 is 899932242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242239993) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 317938 + ... + 318698.

It is an arithmetic number, because the mean of its divisors is an integer number (5184648).

Almost surely, 2^242239998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242239998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331817472).

242239998 is an abundant number, since it is smaller than the sum of its proper divisors (421394946).

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

242239998 is a wasteful number, since it uses less digits than its factorization.

242239998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850.

The product of its digits is 559872, while the sum is 48.

The square root of 242239998 is about 15564.0611024244. The cubic root of 242239998 is about 623.3739045977.

The spelling of 242239998 in words is "two hundred forty-two million, two hundred thirty-nine thousand, nine hundred ninety-eight".