247220041 has 8 divisors (see below), whose sum is σ = 256365000. Its totient is φ = 238116480.

The previous prime is 247220033. The next prime is 247220059. The reversal of 247220041 is 140022742.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 855625 + 246364416 = 925^2 + 15696^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 247220041 - 2³ = 247220033 is a prime.

It is a super-2 number, since 2×247220041² = 122235497344083362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247219994 and 247220021.

It is not an unprimeable number, because it can be changed into a prime (247220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2085 + ... + 22333.

It is an arithmetic number, because the mean of its divisors is an integer number (32045625).

Almost surely, 2^247220041 is an apocalyptic number.

It is an amenable number.

247220041 is a deficient number, since it is larger than the sum of its proper divisors (9144959).

247220041 is a wasteful number, since it uses less digits than its factorization.

247220041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20699.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 247220041 is about 15723.2325238801. The cubic root of 247220041 is about 627.6167968282.

Adding to 247220041 its reverse (140022742), we get a palindrome (387242783).

The spelling of 247220041 in words is "two hundred forty-seven million, two hundred twenty thousand, forty-one".