123540524 has 6 divisors (see below), whose sum is σ = 216195924. Its totient is φ = 61770260.

The previous prime is 123540523. The next prime is 123540539. The reversal of 123540524 is 425045321.

It is a happy number.

It is a super-2 number, since 2×123540524² = 30524522140389152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123540493 and 123540502.

It is not an unprimeable number, because it can be changed into a prime (123540523) by changing a digit.

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 as a sum of consecutive naturals, namely, 15442562 + ... + 15442569.

It is an arithmetic number, because the mean of its divisors is an integer number (36032654).

Almost surely, 2^123540524 is an apocalyptic number.

It is an amenable number.

123540524 is a deficient number, since it is larger than the sum of its proper divisors (92655400).

123540524 is a wasteful number, since it uses less digits than its factorization.

123540524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30885135 (or 30885133 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 123540524 is about 11114.8784968618. The cubic root of 123540524 is about 498.0464089049.

Adding to 123540524 its reverse (425045321), we get a palindrome (548585845).

The spelling of 123540524 in words is "one hundred twenty-three million, five hundred forty thousand, five hundred twenty-four".