123392661 has 16 divisors (see below), whose sum is σ = 189855744. Its totient is φ = 69824304.

The previous prime is 123392641. The next prime is 123392693. The reversal of 123392661 is 166293321.

It is not a de Polignac number, because 123392661 - 2¹¹ = 123390613 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 (123392641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26361 + ... + 30686.

It is an arithmetic number, because the mean of its divisors is an integer number (11865984).

Almost surely, 2^123392661 is an apocalyptic number.

It is an amenable number.

123392661 is a deficient number, since it is larger than the sum of its proper divisors (66463083).

123392661 is a wasteful number, since it uses less digits than its factorization.

123392661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57160.

The product of its digits is 11664, while the sum is 33.

The square root of 123392661 is about 11108.2249257026. The cubic root of 123392661 is about 497.8476292285.

The spelling of 123392661 in words is "one hundred twenty-three million, three hundred ninety-two thousand, six hundred sixty-one".