78412241 has 2 divisors, whose sum is σ = 78412242. Its totient is φ = 78412240.

The previous prime is 78412231. The next prime is 78412249. The reversal of 78412241 is 14221487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47665216 + 30747025 = 6904^2 + 5545^2 .

It is a cyclic number.

It is not a de Polignac number, because 78412241 - 2¹⁰ = 78411217 is a prime.

It is a super-2 number, since 2×78412241² = 12296959077284162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78412249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39206120 + 39206121.

It is an arithmetic number, because the mean of its divisors is an integer number (39206121).

Almost surely, 2^78412241 is an apocalyptic number.

It is an amenable number.

78412241 is a deficient number, since it is larger than the sum of its proper divisors (1).

78412241 is an equidigital number, since it uses as much as digits as its factorization.

78412241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 29.

The square root of 78412241 is about 8855.0686615068. The cubic root of 78412241 is about 428.0172660953.

The spelling of 78412241 in words is "seventy-eight million, four hundred twelve thousand, two hundred forty-one".