123012522 has 24 divisors (see below), whose sum is σ = 271046880. Its totient is φ = 40308840.

The previous prime is 123012503. The next prime is 123012553. The reversal of 123012522 is 225210321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 123012495 and 123012504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56854 + ... + 58977.

It is an arithmetic number, because the mean of its divisors is an integer number (11293620).

Almost surely, 2^123012522 is an apocalyptic number.

123012522 is an abundant number, since it is smaller than the sum of its proper divisors (148034358).

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

123012522 is a wasteful number, since it uses less digits than its factorization.

123012522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115898 (or 115895 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 123012522 is about 11091.1010274003. The cubic root of 123012522 is about 497.3358592537.

Adding to 123012522 its reverse (225210321), we get a palindrome (348222843).

The spelling of 123012522 in words is "one hundred twenty-three million, twelve thousand, five hundred twenty-two".