• 782412 = 6121654081 is an anagram of the next square 782422 = 6121810564.
78241 has 2 divisors, whose sum is σ = 78242. Its totient is φ = 78240.
The previous prime is 78233. The next prime is 78259. The reversal of 78241 is 14287.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 77841 + 400 = 279^2 + 20^2 .
It is a cyclic number.
It is not a de Polignac number, because 78241 - 23 = 78233 is a prime.
It is a super-2 number, since 2×782412 = 12243308162, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (78041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39120 + 39121.
It is an arithmetic number, because the mean of its divisors is an integer number (39121).
278241 is an apocalyptic number.
It is an amenable number.
78241 is a deficient number, since it is larger than the sum of its proper divisors (1).
78241 is an equidigital number, since it uses as much as digits as its factorization.
78241 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 448, while the sum is 22.
The square root of 78241 is about 279.7159273263. The cubic root of 78241 is about 42.7705463061.
The spelling of 78241 in words is "seventy-eight thousand, two hundred forty-one".
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