242067681 has 12 divisors (see below), whose sum is σ = 349836708. Its totient is φ = 161293824.

The previous prime is 242067677. The next prime is 242067691. The reversal of 242067681 is 186760242.

It can be written as a sum of positive squares in 2 ways, for example, as 222487056 + 19580625 = 14916^2 + 4425^2 .

It is not a de Polignac number, because 242067681 - 2² = 242067677 is a prime.

It is a super-2 number, since 2×242067681² = 117193524369435522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (242067601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14541 + ... + 26373.

It is an arithmetic number, because the mean of its divisors is an integer number (29153059).

Almost surely, 2^242067681 is an apocalyptic number.

It is an amenable number.

242067681 is a deficient number, since it is larger than the sum of its proper divisors (107769027).

242067681 is a wasteful number, since it uses less digits than its factorization.

242067681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14112 (or 14109 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 242067681 is about 15558.5243837582. The cubic root of 242067681 is about 623.2260575554.

The spelling of 242067681 in words is "two hundred forty-two million, sixty-seven thousand, six hundred eighty-one".