242155205 has 16 divisors (see below), whose sum is σ = 295358400. Its totient is φ = 190565760.

The previous prime is 242155189. The next prime is 242155217. The reversal of 242155205 is 502551242.

It is not a de Polignac number, because 242155205 - 2⁴ = 242155189 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 92606 + ... + 95184.

It is an arithmetic number, because the mean of its divisors is an integer number (18459900).

Almost surely, 2^242155205 is an apocalyptic number.

It is an amenable number.

242155205 is a deficient number, since it is larger than the sum of its proper divisors (53203195).

242155205 is a wasteful number, since it uses less digits than its factorization.

242155205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2884.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 242155205 is about 15561.3368641643. The cubic root of 242155205 is about 623.3011614332.

The spelling of 242155205 in words is "two hundred forty-two million, one hundred fifty-five thousand, two hundred five".