123661461 has 32 divisors (see below), whose sum is σ = 206466048. Its totient is φ = 63959040.

The previous prime is 123661459. The next prime is 123661477. The reversal of 123661461 is 164166321.

It is not a de Polignac number, because 123661461 - 2¹ = 123661459 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123661411) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 58326 + ... + 60408.

It is an arithmetic number, because the mean of its divisors is an integer number (6452064).

Almost surely, 2^123661461 is an apocalyptic number.

123661461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123661461 is a deficient number, since it is larger than the sum of its proper divisors (82804587).

123661461 is a wasteful number, since it uses less digits than its factorization.

123661461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361.

The product of its digits is 5184, while the sum is 30.

The square root of 123661461 is about 11120.3174864749. The cubic root of 123661461 is about 498.2088727210.

The spelling of 123661461 in words is "one hundred twenty-three million, six hundred sixty-one thousand, four hundred sixty-one".