242064861 has 16 divisors (see below), whose sum is σ = 335166720. Its totient is φ = 155278080.

The previous prime is 242064839. The next prime is 242064863. The reversal of 242064861 is 168460242.

It is not a de Polignac number, because 242064861 - 2⁵ = 242064829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242064863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4501 + ... + 22458.

It is an arithmetic number, because the mean of its divisors is an integer number (20947920).

Almost surely, 2^242064861 is an apocalyptic number.

It is an amenable number.

242064861 is a deficient number, since it is larger than the sum of its proper divisors (93101859).

242064861 is a wasteful number, since it uses less digits than its factorization.

242064861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27076.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 242064861 is about 15558.4337579333. The cubic root of 242064861 is about 623.2236374274.

The spelling of 242064861 in words is "two hundred forty-two million, sixty-four thousand, eight hundred sixty-one".