123121164 has 12 divisors (see below), whose sum is σ = 287282744. Its totient is φ = 41040384.

The previous prime is 123121151. The next prime is 123121177. The reversal of 123121164 is 461121321.

It is an interprime number because it is at equal distance from previous prime (123121151) and next prime (123121177).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123121164.

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, 5130037 + ... + 5130060.

Almost surely, 2^123121164 is an apocalyptic number.

It is an amenable number.

123121164 is an abundant number, since it is smaller than the sum of its proper divisors (164161580).

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

123121164 is a wasteful number, since it uses less digits than its factorization.

123121164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260104 (or 10260102 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 123121164 is about 11095.9976568130. The cubic root of 123121164 is about 497.4822282651.

Adding to 123121164 its reverse (461121321), we get a palindrome (584242485).

The spelling of 123121164 in words is "one hundred twenty-three million, one hundred twenty-one thousand, one hundred sixty-four".