123021966 has 32 divisors (see below), whose sum is σ = 255104640. Its totient is φ = 39518496.

The previous prime is 123021953. The next prime is 123021967. The reversal of 123021966 is 669120321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123021967) 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, 21165 + ... + 26343.

It is an arithmetic number, because the mean of its divisors is an integer number (7972020).

Almost surely, 2^123021966 is an apocalyptic number.

123021966 is an abundant number, since it is smaller than the sum of its proper divisors (132082674).

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

123021966 is a wasteful number, since it uses less digits than its factorization.

123021966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 123021966 is about 11091.5267659597. The cubic root of 123021966 is about 497.3485861956.

The spelling of 123021966 in words is "one hundred twenty-three million, twenty-one thousand, nine hundred sixty-six".