242558247 has 8 divisors (see below), whose sum is σ = 323916544. Its totient is φ = 161452728.

The previous prime is 242558243. The next prime is 242558269. The reversal of 242558247 is 742855242.

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

It is not a de Polignac number, because 242558247 - 2² = 242558243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242558243) 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, 60943 + ... + 64800.

It is an arithmetic number, because the mean of its divisors is an integer number (40489568).

Almost surely, 2^242558247 is an apocalyptic number.

242558247 is a deficient number, since it is larger than the sum of its proper divisors (81358297).

242558247 is a wasteful number, since it uses less digits than its factorization.

242558247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126389.

The product of its digits is 179200, while the sum is 39.

The square root of 242558247 is about 15574.2815885677. The cubic root of 242558247 is about 623.6467762782.

The spelling of 242558247 in words is "two hundred forty-two million, five hundred fifty-eight thousand, two hundred forty-seven".