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244042081 is a prime number
BaseRepresentation
bin11101000101111…
…00100101100001
3122000012121210121
432202330211201
5444433321311
640114400241
76022215643
oct1642744541
9560177717
10244042081
11115834478
1269890081
133b7378ca
14245a8893
1516658b71
hexe8bc961

244042081 has 2 divisors, whose sum is σ = 244042082. Its totient is φ = 244042080.

The previous prime is 244042079. The next prime is 244042087. The reversal of 244042081 is 180240442.

244042081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140185600 + 103856481 = 11840^2 + 10191^2 .

It is a cyclic number.

It is not a de Polignac number, because 244042081 - 21 = 244042079 is a prime.

It is a super-2 number, since 2×2440420812 = 119113074597621122, which contains 22 as substring.

Together with 244042079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (244042087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122021040 + 122021041.

It is an arithmetic number, because the mean of its divisors is an integer number (122021041).

Almost surely, 2244042081 is an apocalyptic number.

It is an amenable number.

244042081 is a deficient number, since it is larger than the sum of its proper divisors (1).

244042081 is an equidigital number, since it uses as much as digits as its factorization.

244042081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 244042081 is about 15621.8462737283. The cubic root of 244042081 is about 624.9158978034.

It can be divided in two parts, 2440 and 42081, that added together give a square (44521 = 2112).

The spelling of 244042081 in words is "two hundred forty-four million, forty-two thousand, eighty-one".