242809199 has 8 divisors (see below), whose sum is σ = 251866560. Its totient is φ = 233797536.

The previous prime is 242809157. The next prime is 242809211. The reversal of 242809199 is 991908242.

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

It is a de Polignac number, because none of the positive numbers 2^k-242809199 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 (242809129) 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, 407 + ... + 22040.

It is an arithmetic number, because the mean of its divisors is an integer number (31483320).

Almost surely, 2^242809199 is an apocalyptic number.

242809199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

242809199 is a deficient number, since it is larger than the sum of its proper divisors (9057361).

242809199 is a wasteful number, since it uses less digits than its factorization.

242809199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22849.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 242809199 is about 15582.3361213908. The cubic root of 242809199 is about 623.8617781935.

The spelling of 242809199 in words is "two hundred forty-two million, eight hundred nine thousand, one hundred ninety-nine".