242535857 has 8 divisors (see below), whose sum is σ = 246458184. Its totient is φ = 238629888.

The previous prime is 242535829. The next prime is 242535863. The reversal of 242535857 is 758535242.

It can be written as a sum of positive squares in 4 ways, for example, as 17505856 + 225030001 = 4184^2 + 15001^2 .

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 242535857 - 2¹⁰ = 242534833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242535157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27773 + ... + 35445.

It is an arithmetic number, because the mean of its divisors is an integer number (30807273).

Almost surely, 2^242535857 is an apocalyptic number.

It is an amenable number.

242535857 is a deficient number, since it is larger than the sum of its proper divisors (3922327).

242535857 is an equidigital number, since it uses as much as digits as its factorization.

242535857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8179.

The product of its digits is 336000, while the sum is 41.

The square root of 242535857 is about 15573.5627587267. The cubic root of 242535857 is about 623.6275865493.

The spelling of 242535857 in words is "two hundred forty-two million, five hundred thirty-five thousand, eight hundred fifty-seven".