123451660 has 24 divisors (see below), whose sum is σ = 259701120. Its totient is φ = 49294464.

The previous prime is 123451631. The next prime is 123451661. The reversal of 123451660 is 66154321.

It is not an unprimeable number, because it can be changed into a prime (123451661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7056 + ... + 17224.

It is an arithmetic number, because the mean of its divisors is an integer number (10820880).

Almost surely, 2^123451660 is an apocalyptic number.

123451660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123451660 is an abundant number, since it is smaller than the sum of its proper divisors (136249460).

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

123451660 is a wasteful number, since it uses less digits than its factorization.

123451660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10785 (or 10783 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 123451660 is about 11110.8802531573. The cubic root of 123451660 is about 497.9269635852.

The spelling of 123451660 in words is "one hundred twenty-three million, four hundred fifty-one thousand, six hundred sixty".