123661010 has 32 divisors (see below), whose sum is σ = 244206144. Its totient is φ = 44712000.

The previous prime is 123660989. The next prime is 123661033. The reversal of 123661010 is 10166321.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16805 + ... + 23015.

It is an arithmetic number, because the mean of its divisors is an integer number (7631442).

Almost surely, 2^123661010 is an apocalyptic number.

123661010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123661010 is a deficient number, since it is larger than the sum of its proper divisors (120545134).

123661010 is a wasteful number, since it uses less digits than its factorization.

123661010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 123661010 is about 11120.2972082584. The cubic root of 123661010 is about 498.2082670555.

The spelling of 123661010 in words is "one hundred twenty-three million, six hundred sixty-one thousand, ten".