123424660 has 12 divisors (see below), whose sum is σ = 259191828. Its totient is φ = 49369856.

The previous prime is 123424657. The next prime is 123424681. The reversal of 123424660 is 66424321.

It can be written as a sum of positive squares in 2 ways, for example, as 73891216 + 49533444 = 8596^2 + 7038^2 .

It is a super-2 number, since 2×123424660² = 30467293392231200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3085597 + ... + 3085636.

It is an arithmetic number, because the mean of its divisors is an integer number (21599319).

Almost surely, 2^123424660 is an apocalyptic number.

123424660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123424660 is an abundant number, since it is smaller than the sum of its proper divisors (135767168).

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

123424660 is a wasteful number, since it uses less digits than its factorization.

123424660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171242 (or 6171240 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 123424660 is about 11109.6651614709. The cubic root of 123424660 is about 497.8906605544.

Adding to 123424660 its reverse (66424321), we get a palindrome (189848981).

The spelling of 123424660 in words is "one hundred twenty-three million, four hundred twenty-four thousand, six hundred sixty".