242455939 has 8 divisors (see below), whose sum is σ = 270125568. Its totient is φ = 215724360.

The previous prime is 242455937. The next prime is 242455943. The reversal of 242455939 is 939554242.

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

It is not a de Polignac number, because 242455939 - 2¹ = 242455937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242455895 and 242455904.

It is not an unprimeable number, because it can be changed into a prime (242455937) 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, 233967 + ... + 235000.

It is an arithmetic number, because the mean of its divisors is an integer number (33765696).

Almost surely, 2^242455939 is an apocalyptic number.

242455939 is a deficient number, since it is larger than the sum of its proper divisors (27669629).

242455939 is a wasteful number, since it uses less digits than its factorization.

242455939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469025.

The product of its digits is 388800, while the sum is 43.

The square root of 242455939 is about 15570.9967246802. The cubic root of 242455939 is about 623.5590818407.

The spelling of 242455939 in words is "two hundred forty-two million, four hundred fifty-five thousand, nine hundred thirty-nine".