242255251 has 8 divisors (see below), whose sum is σ = 288900864. Its totient is φ = 198619080.

The previous prime is 242255231. The next prime is 242255257. The reversal of 242255251 is 152552242.

242255251 = T₁₆₈ + T₁₆₉ + ... + T₁₁₃₃.

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

It is a cyclic number.

It is not a de Polignac number, because 242255251 - 2¹¹ = 242253203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242255257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752185 + ... + 752506.

It is an arithmetic number, because the mean of its divisors is an integer number (36112608).

Almost surely, 2^242255251 is an apocalyptic number.

242255251 is a deficient number, since it is larger than the sum of its proper divisors (46645613).

242255251 is a wasteful number, since it uses less digits than its factorization.

242255251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504721.

The product of its digits is 8000, while the sum is 28.

The square root of 242255251 is about 15564.5511017825. The cubic root of 242255251 is about 623.3869882100.

The spelling of 242255251 in words is "two hundred forty-two million, two hundred fifty-five thousand, two hundred fifty-one".