242136730 has 48 divisors (see below), whose sum is σ = 485043552. Its totient is φ = 86952800.

The previous prime is 242136721. The next prime is 242136731. The reversal of 242136730 is 37631242.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (242136731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99225 + ... + 101635.

It is an arithmetic number, because the mean of its divisors is an integer number (10105074).

Almost surely, 2^242136730 is an apocalyptic number.

242136730 is an abundant number, since it is smaller than the sum of its proper divisors (242906822).

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

242136730 is a wasteful number, since it uses less digits than its factorization.

242136730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523 (or 2512 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 242136730 is about 15560.7432341775. The cubic root of 242136730 is about 623.2853096412.

Adding to 242136730 its reverse (37631242), we get a palindrome (279767972).

The spelling of 242136730 in words is "two hundred forty-two million, one hundred thirty-six thousand, seven hundred thirty".