242308155 has 16 divisors (see below), whose sum is σ = 397149984. Its totient is φ = 126078720.

The previous prime is 242308111. The next prime is 242308163. The reversal of 242308155 is 551803242.

It is not a de Polignac number, because 242308155 - 2⁸ = 242307899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196384 + ... + 197613.

It is an arithmetic number, because the mean of its divisors is an integer number (24821874).

Almost surely, 2^242308155 is an apocalyptic number.

242308155 is a deficient number, since it is larger than the sum of its proper divisors (154841829).

242308155 is a wasteful number, since it uses less digits than its factorization.

242308155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394046.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 242308155 is about 15566.2505119248. The cubic root of 242308155 is about 623.4323635798.

It can be divided in two parts, 24230 and 8155, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 242308155 in words is "two hundred forty-two million, three hundred eight thousand, one hundred fifty-five".