123661260 has 36 divisors (see below), whose sum is σ = 375106368. Its totient is φ = 32976288.

The previous prime is 123661193. The next prime is 123661267. The reversal of 123661260 is 62166321.

123661260 is a `hidden beast` number, since 12 + 36 + 612 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (123661267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 343324 + ... + 343683.

Almost surely, 2^123661260 is an apocalyptic number.

123661260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123661260 is an abundant number, since it is smaller than the sum of its proper divisors (251445108).

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

123661260 is a wasteful number, since it uses less digits than its factorization.

123661260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687022 (or 687017 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123661260 is about 11120.3084489595. The cubic root of 123661260 is about 498.2086027904.

The spelling of 123661260 in words is "one hundred twenty-three million, six hundred sixty-one thousand, two hundred sixty".