242143530 has 32 divisors (see below), whose sum is σ = 593512704. Its totient is φ = 63197376.

The previous prime is 242143523. The next prime is 242143537. The reversal of 242143530 is 35341242.

It is an interprime number because it is at equal distance from previous prime (242143523) and next prime (242143537).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 242143530.

It is not an unprimeable number, because it can be changed into a prime (242143537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84457 + ... + 87276.

It is an arithmetic number, because the mean of its divisors is an integer number (18547272).

Almost surely, 2^242143530 is an apocalyptic number.

242143530 is an abundant number, since it is smaller than the sum of its proper divisors (351369174).

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

242143530 is a wasteful number, since it uses less digits than its factorization.

242143530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171790.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 242143530 is about 15560.9617312041. The cubic root of 242143530 is about 623.2911442241.

Adding to 242143530 its reverse (35341242), we get a palindrome (277484772).

The spelling of 242143530 in words is "two hundred forty-two million, one hundred forty-three thousand, five hundred thirty".