123666141 has 4 divisors (see below), whose sum is σ = 164888192. Its totient is φ = 82444092.

The previous prime is 123666139. The next prime is 123666149. The reversal of 123666141 is 141666321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123666141 - 2¹ = 123666139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123666099 and 123666108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123666149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20611021 + ... + 20611026.

It is an arithmetic number, because the mean of its divisors is an integer number (41222048).

Almost surely, 2^123666141 is an apocalyptic number.

It is an amenable number.

123666141 is a deficient number, since it is larger than the sum of its proper divisors (41222051).

123666141 is an equidigital number, since it uses as much as digits as its factorization.

123666141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41222050.

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

The square root of 123666141 is about 11120.5279101309. The cubic root of 123666141 is about 498.2151575897.

The spelling of 123666141 in words is "one hundred twenty-three million, six hundred sixty-six thousand, one hundred forty-one".