242136444 has 48 divisors (see below), whose sum is σ = 622734336. Its totient is φ = 72614400.

The previous prime is 242136431. The next prime is 242136451. The reversal of 242136444 is 444631242.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3349 + ... + 22259.

It is an arithmetic number, because the mean of its divisors is an integer number (12973632).

Almost surely, 2^242136444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242136444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311367168).

242136444 is an abundant number, since it is smaller than the sum of its proper divisors (380597892).

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

242136444 is a wasteful number, since it uses less digits than its factorization.

242136444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19026 (or 19024 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 242136444 is about 15560.7340443824. The cubic root of 242136444 is about 623.2850642431.

Adding to 242136444 its reverse (444631242), we get a palindrome (686767686).

The spelling of 242136444 in words is "two hundred forty-two million, one hundred thirty-six thousand, four hundred forty-four".