242003681 has 6 divisors (see below), whose sum is σ = 244961490. Its totient is φ = 239081168.

The previous prime is 242003669. The next prime is 242003683. The reversal of 242003681 is 186300242.

It can be written as a sum of positive squares in only one way, i.e., 150896656 + 91107025 = 12284^2 + 9545^2 .

It is not a de Polignac number, because 242003681 - 2⁶ = 242003617 is a prime.

It is a super-2 number, since 2×242003681² = 117131563235099522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242003681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242003683) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10676 + ... + 24453.

It is an arithmetic number, because the mean of its divisors is an integer number (40826915).

Almost surely, 2^242003681 is an apocalyptic number.

It is an amenable number.

242003681 is a deficient number, since it is larger than the sum of its proper divisors (2957809).

242003681 is an frugal number, since it uses more digits than its factorization.

242003681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35295 (or 35212 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 242003681 is about 15556.4674974751. The cubic root of 242003681 is about 623.1711280371.

The spelling of 242003681 in words is "two hundred forty-two million, three thousand, six hundred eighty-one".