278412041 has 4 divisors (see below), whose sum is σ = 279447300. Its totient is φ = 277376784.

The previous prime is 278411993. The next prime is 278412053. The reversal of 278412041 is 140214872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131905225 + 146506816 = 11485^2 + 12104^2 .

It is a cyclic number.

It is not a de Polignac number, because 278412041 - 2²² = 274217737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 278411995 and 278412013.

It is not an unprimeable number, because it can be changed into a prime (278412941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517226 + ... + 517763.

It is an arithmetic number, because the mean of its divisors is an integer number (69861825).

Almost surely, 2^278412041 is an apocalyptic number.

It is an amenable number.

278412041 is a deficient number, since it is larger than the sum of its proper divisors (1035259).

278412041 is a wasteful number, since it uses less digits than its factorization.

278412041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035258.

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

The square root of 278412041 is about 16685.6837138908. The cubic root of 278412041 is about 652.9741740077.

The spelling of 278412041 in words is "two hundred seventy-eight million, four hundred twelve thousand, forty-one".