123632144 has 10 divisors (see below), whose sum is σ = 239537310. Its totient is φ = 61816064.

The previous prime is 123632101. The next prime is 123632147. The reversal of 123632144 is 441236321.

It can be written as a sum of positive squares in only one way, i.e., 88585744 + 35046400 = 9412^2 + 5920^2 .

It is not an unprimeable number, because it can be changed into a prime (123632147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3863489 + ... + 3863520.

It is an arithmetic number, because the mean of its divisors is an integer number (23953731).

Almost surely, 2^123632144 is an apocalyptic number.

It is an amenable number.

123632144 is a deficient number, since it is larger than the sum of its proper divisors (115905166).

123632144 is an equidigital number, since it uses as much as digits as its factorization.

123632144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7727017 (or 7727011 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 123632144 is about 11118.9992355427. Note that the first 3 decimals coincide. The cubic root of 123632144 is about 498.1694987081.

Adding to 123632144 its reverse (441236321), we get a palindrome (564868465).

The spelling of 123632144 in words is "one hundred twenty-three million, six hundred thirty-two thousand, one hundred forty-four".