242690691 has 16 divisors (see below), whose sum is σ = 343332000. Its totient is φ = 151961088.

The previous prime is 242690681. The next prime is 242690699. The reversal of 242690691 is 196096242.

It is not a de Polignac number, because 242690691 - 2⁶ = 242690627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242690699) 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, 21285 + ... + 30633.

It is an arithmetic number, because the mean of its divisors is an integer number (21458250).

Almost surely, 2^242690691 is an apocalyptic number.

242690691 is a deficient number, since it is larger than the sum of its proper divisors (100641309).

242690691 is a wasteful number, since it uses less digits than its factorization.

242690691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9878.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 242690691 is about 15578.5330182274. The cubic root of 242690691 is about 623.7602655060.

The spelling of 242690691 in words is "two hundred forty-two million, six hundred ninety thousand, six hundred ninety-one".