123146564 has 18 divisors (see below), whose sum is σ = 216928782. Its totient is φ = 61168800.

The previous prime is 123146537. The next prime is 123146579. The reversal of 123146564 is 465641321.

It can be written as a sum of positive squares in only one way, i.e., 112190464 + 10956100 = 10592^2 + 3310^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 123146564.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371879 + ... + 372209.

It is an arithmetic number, because the mean of its divisors is an integer number (12051599).

Almost surely, 2^123146564 is an apocalyptic number.

It is an amenable number.

123146564 is a deficient number, since it is larger than the sum of its proper divisors (93782218).

123146564 is an equidigital number, since it uses as much as digits as its factorization.

123146564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 614 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 123146564 is about 11097.1421546270. The cubic root of 123146564 is about 497.5164362473.

Adding to 123146564 its reverse (465641321), we get a palindrome (588787885).

The spelling of 123146564 in words is "one hundred twenty-three million, one hundred forty-six thousand, five hundred sixty-four".