147218 has 4 divisors (see below), whose sum is σ = 220830. Its totient is φ = 73608.

The previous prime is 147211. The next prime is 147221. The reversal of 147218 is 812741.

147218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812741 = 433 ⋅1877.

It can be written as a sum of positive squares in only one way, i.e., 146689 + 529 = 383^2 + 23^2 .

It is a super-3 number, since 3×147218³ = 9572028763332696, which contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 147193 and 147202.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147218.

It is not an unprimeable number, because it can be changed into a prime (147211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36803 + ... + 36806.

2¹⁴⁷²¹⁸ is an apocalyptic number.

147218 is a deficient number, since it is larger than the sum of its proper divisors (73612).

147218 is an equidigital number, since it uses as much as digits as its factorization.

147218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73611.

The product of its digits is 448, while the sum is 23.

The square root of 147218 is about 383.6899790195. The cubic root of 147218 is about 52.8023969680.

Adding to 147218 its reverse (812741), we get a palindrome (959959).

The spelling of 147218 in words is "one hundred forty-seven thousand, two hundred eighteen".