123423552 has 126 divisors (see below), whose sum is σ = 411624018. Its totient is φ = 35255808.

The previous prime is 123423541. The next prime is 123423569. The reversal of 123423552 is 255324321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 14930496 = 10416^2 + 3864^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26038 + ... + 30410.

Almost surely, 2^123423552 is an apocalyptic number.

123423552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123423552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205812009).

123423552 is an abundant number, since it is smaller than the sum of its proper divisors (288200466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123423552 is a wasteful number, since it uses less digits than its factorization.

123423552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405 (or 4385 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 123423552 is about 11109.6152948696. The cubic root of 123423552 is about 497.8891706724.

Adding to 123423552 its reverse (255324321), we get a palindrome (378747873).

The spelling of 123423552 in words is "one hundred twenty-three million, four hundred twenty-three thousand, five hundred fifty-two".