242491329 has 6 divisors (see below), whose sum is σ = 350265266. Its totient is φ = 161660880.

The previous prime is 242491321. The next prime is 242491397. The reversal of 242491329 is 923194242.

242491329 is a `hidden beast` number, since 242 + 4 + 91 + 329 = 666.

It can be written as a sum of positive squares in only one way, i.e., 240095025 + 2396304 = 15495^2 + 1548^2 .

It is not a de Polignac number, because 242491329 - 2³ = 242491321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242491293 and 242491302.

It is not an unprimeable number, because it can be changed into a prime (242491321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13471732 + ... + 13471749.

Almost surely, 2^242491329 is an apocalyptic number.

It is an amenable number.

242491329 is a deficient number, since it is larger than the sum of its proper divisors (107773937).

242491329 is a wasteful number, since it uses less digits than its factorization.

242491329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26943487 (or 26943484 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 242491329 is about 15572.1330908774. The cubic root of 242491329 is about 623.5894195622.

The spelling of 242491329 in words is "two hundred forty-two million, four hundred ninety-one thousand, three hundred twenty-nine".