123227145 has 12 divisors (see below), whose sum is σ = 213593796. Its totient is φ = 65721120.

The previous prime is 123227113. The next prime is 123227183. The reversal of 123227145 is 541722321.

It can be written as a sum of positive squares in 2 ways, for example, as 58247424 + 64979721 = 7632^2 + 8061^2 .

It is not a de Polignac number, because 123227145 - 2⁵ = 123227113 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1369146 + ... + 1369235.

It is an arithmetic number, because the mean of its divisors is an integer number (17799483).

Almost surely, 2^123227145 is an apocalyptic number.

123227145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123227145 is a deficient number, since it is larger than the sum of its proper divisors (90366651).

123227145 is a wasteful number, since it uses less digits than its factorization.

123227145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738392 (or 2738389 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 123227145 is about 11100.7722704324. The cubic root of 123227145 is about 497.6249292750.

Adding to 123227145 its reverse (541722321), we get a palindrome (664949466).

The spelling of 123227145 in words is "one hundred twenty-three million, two hundred twenty-seven thousand, one hundred forty-five".