242452155 has 16 divisors (see below), whose sum is σ = 423189504. Its totient is φ = 117552480.

The previous prime is 242452129. The next prime is 242452169. The reversal of 242452155 is 551254242.

It is not a de Polignac number, because 242452155 - 2⁵ = 242452123 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734539 + ... + 734868.

It is an arithmetic number, because the mean of its divisors is an integer number (26449344).

Almost surely, 2^242452155 is an apocalyptic number.

242452155 is a deficient number, since it is larger than the sum of its proper divisors (180737349).

242452155 is a wasteful number, since it uses less digits than its factorization.

242452155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469426.

The product of its digits is 16000, while the sum is 30.

The square root of 242452155 is about 15570.8752162491. The cubic root of 242452155 is about 623.5558378701. Note that the first 3 decimals are identical.

The spelling of 242452155 in words is "two hundred forty-two million, four hundred fifty-two thousand, one hundred fifty-five".