224742145 has 4 divisors (see below), whose sum is σ = 269690580. Its totient is φ = 179793712.

The previous prime is 224742139. The next prime is 224742169. The reversal of 224742145 is 541247422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541247422 = 2 ⋅270623711.

It can be written as a sum of positive squares in 2 ways, for example, as 99660289 + 125081856 = 9983^2 + 11184^2 .

It is a cyclic number.

It is not a de Polignac number, because 224742145 - 2⁷ = 224742017 is a prime.

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, 22474210 + ... + 22474219.

It is an arithmetic number, because the mean of its divisors is an integer number (67422645).

Almost surely, 2^224742145 is an apocalyptic number.

It is an amenable number.

224742145 is a deficient number, since it is larger than the sum of its proper divisors (44948435).

224742145 is an equidigital number, since it uses as much as digits as its factorization.

224742145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44948434.

The product of its digits is 17920, while the sum is 31.

The square root of 224742145 is about 14991.4023693582. The cubic root of 224742145 is about 607.9877661219.

Adding to 224742145 its reverse (541247422), we get a palindrome (765989567).

The spelling of 224742145 in words is "two hundred twenty-four million, seven hundred forty-two thousand, one hundred forty-five".