123543604 has 24 divisors (see below), whose sum is σ = 219263688. Its totient is φ = 60902400.

The previous prime is 123543571. The next prime is 123543631. The reversal of 123543604 is 406345321.

It can be written as a sum of positive squares in 4 ways, for example, as 39087504 + 84456100 = 6252^2 + 9190^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125964 + ... + 126940.

It is an arithmetic number, because the mean of its divisors is an integer number (9135987).

Almost surely, 2^123543604 is an apocalyptic number.

It is an amenable number.

123543604 is a deficient number, since it is larger than the sum of its proper divisors (95720084).

123543604 is a wasteful number, since it uses less digits than its factorization.

123543604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 123543604 is about 11115.0170490198. The cubic root of 123543604 is about 498.0505478172.

Adding to 123543604 its reverse (406345321), we get a palindrome (529888925).

The spelling of 123543604 in words is "one hundred twenty-three million, five hundred forty-three thousand, six hundred four".