123205045252 has 24 divisors (see below), whose sum is σ = 217067618880. Its totient is φ = 61185842400.

The previous prime is 123205045241. The next prime is 123205045253. The reversal of 123205045252 is 252540502321.

It is not an unprimeable number, because it can be changed into a prime (123205045253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7159074 + ... + 7176262.

It is an arithmetic number, because the mean of its divisors is an integer number (9044484120).

Almost surely, 2^123205045252 is an apocalyptic number.

It is an amenable number.

123205045252 is a deficient number, since it is larger than the sum of its proper divisors (93862573628).

123205045252 is a wasteful number, since it uses less digits than its factorization.

123205045252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29211 (or 29209 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 123205045252 its reverse (252540502321), we get a palindrome (375745547573).

The spelling of 123205045252 in words is "one hundred twenty-three billion, two hundred five million, forty-five thousand, two hundred fifty-two".