242852391 has 8 divisors (see below), whose sum is σ = 359781360. Its totient is φ = 161901576.

The previous prime is 242852387. The next prime is 242852411. The reversal of 242852391 is 193258242.

It is a happy number.

242852391 is a `hidden beast` number, since 2 + 42 + 8 + 523 + 91 = 666.

It is not a de Polignac number, because 242852391 - 2² = 242852387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242852381) 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, 4497240 + ... + 4497293.

It is an arithmetic number, because the mean of its divisors is an integer number (44972670).

Almost surely, 2^242852391 is an apocalyptic number.

242852391 is a deficient number, since it is larger than the sum of its proper divisors (116928969).

242852391 is an equidigital number, since it uses as much as digits as its factorization.

242852391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8994542 (or 8994536 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 242852391 is about 15583.7219880233. The cubic root of 242852391 is about 623.8987677865.

The spelling of 242852391 in words is "two hundred forty-two million, eight hundred fifty-two thousand, three hundred ninety-one".