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242724817 is a prime number
BaseRepresentation
bin11100111011110…
…10111111010001
3121220201200212001
432131322333101
5444114143232
640030234001
76005061346
oct1635727721
9556650761
10242724817
11115014825
1269355901
133b39616a
14243447cd
15164986e7
hexe77afd1

242724817 has 2 divisors, whose sum is σ = 242724818. Its totient is φ = 242724816.

The previous prime is 242724787. The next prime is 242724821. The reversal of 242724817 is 718427242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232745536 + 9979281 = 15256^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 242724817 - 211 = 242722769 is a prime.

It is not a weakly prime, because it can be changed into another prime (242722817) by changing a digit.

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 as a sum of consecutive naturals, namely, 121362408 + 121362409.

It is an arithmetic number, because the mean of its divisors is an integer number (121362409).

Almost surely, 2242724817 is an apocalyptic number.

It is an amenable number.

242724817 is a deficient number, since it is larger than the sum of its proper divisors (1).

242724817 is an equidigital number, since it uses as much as digits as its factorization.

242724817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 37.

The square root of 242724817 is about 15579.6282689928. The cubic root of 242724817 is about 623.7895008605.

The spelling of 242724817 in words is "two hundred forty-two million, seven hundred twenty-four thousand, eight hundred seventeen".