247223242 has 8 divisors (see below), whose sum is σ = 423811296. Its totient is φ = 105952812.

The previous prime is 247223237. The next prime is 247223279. The reversal of 247223242 is 242322742.

247223242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×247223242² = 122238662769981128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247223242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8829388 + ... + 8829415.

It is an arithmetic number, because the mean of its divisors is an integer number (52976412).

Almost surely, 2^247223242 is an apocalyptic number.

247223242 is a deficient number, since it is larger than the sum of its proper divisors (176588054).

247223242 is a wasteful number, since it uses less digits than its factorization.

247223242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17658812.

The product of its digits is 10752, while the sum is 28.

The square root of 247223242 is about 15723.3343155960. The cubic root of 247223242 is about 627.6195056063.

Adding to 247223242 its reverse (242322742), we get a palindrome (489545984).

The spelling of 247223242 in words is "two hundred forty-seven million, two hundred twenty-three thousand, two hundred forty-two".