123772166 has 8 divisors (see below), whose sum is σ = 212180880. Its totient is φ = 53045208.

The previous prime is 123772151. The next prime is 123772171. The reversal of 123772166 is 661277321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4420421 + ... + 4420448.

It is an arithmetic number, because the mean of its divisors is an integer number (26522610).

Almost surely, 2^123772166 is an apocalyptic number.

123772166 is a deficient number, since it is larger than the sum of its proper divisors (88408714).

123772166 is an equidigital number, since it uses as much as digits as its factorization.

123772166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8840878.

The product of its digits is 21168, while the sum is 35.

The square root of 123772166 is about 11125.2939736440. The cubic root of 123772166 is about 498.3574982844.

The spelling of 123772166 in words is "one hundred twenty-three million, seven hundred seventy-two thousand, one hundred sixty-six".