242855387 has 8 divisors (see below), whose sum is σ = 261500400. Its totient is φ = 224694784.

The previous prime is 242855363. The next prime is 242855399. The reversal of 242855387 is 783558242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242855387 - 2¹⁰ = 242854363 is a prime.

It is a super-3 number, since 3×242855387³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242852387) 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 7 ways as a sum of consecutive naturals, for example, 120062 + ... + 122067.

It is an arithmetic number, because the mean of its divisors is an integer number (32687550).

Almost surely, 2^242855387 is an apocalyptic number.

242855387 is a deficient number, since it is larger than the sum of its proper divisors (18645013).

242855387 is a wasteful number, since it uses less digits than its factorization.

242855387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242205.

The product of its digits is 537600, while the sum is 44.

The square root of 242855387 is about 15583.8181136716. The cubic root of 242855387 is about 623.9013333957.

The spelling of 242855387 in words is "two hundred forty-two million, eight hundred fifty-five thousand, three hundred eighty-seven".