242357287 has 16 divisors (see below), whose sum is σ = 269920512. Its totient is φ = 216552960.

The previous prime is 242357281. The next prime is 242357303. The reversal of 242357287 is 782753242.

It is a cyclic number.

It is not a de Polignac number, because 242357287 - 2¹⁵ = 242324519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242357281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23593 + ... + 32269.

It is an arithmetic number, because the mean of its divisors is an integer number (16870032).

Almost surely, 2^242357287 is an apocalyptic number.

242357287 is a deficient number, since it is larger than the sum of its proper divisors (27563225).

242357287 is a wasteful number, since it uses less digits than its factorization.

242357287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8778.

The product of its digits is 188160, while the sum is 40.

The square root of 242357287 is about 15567.8285897552. The cubic root of 242357287 is about 623.4744978184.

The spelling of 242357287 in words is "two hundred forty-two million, three hundred fifty-seven thousand, two hundred eighty-seven".