123200000002 has 4 divisors (see below), whose sum is σ = 184800000006. Its totient is φ = 61600000000.

The previous prime is 123199999943. The next prime is 123200000003. The reversal of 123200000002 is 200000002321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63061756641 + 60138243361 = 251121^2 + 245231^2 .

It is not an unprimeable number, because it can be changed into a prime (123200000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30799999999 + ... + 30800000002.

Almost surely, 2^123200000002 is an apocalyptic number.

123200000002 is a deficient number, since it is larger than the sum of its proper divisors (61600000004).

123200000002 is an equidigital number, since it uses as much as digits as its factorization.

123200000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61600000003.

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 123200000002 its reverse (200000002321), we get a palindrome (323200002323).

The spelling of 123200000002 in words is "one hundred twenty-three billion, two hundred million, two", and thus it is an aban number.