123140448122 has 4 divisors (see below), whose sum is σ = 184710672186. Its totient is φ = 61570224060.

The previous prime is 123140448097. The next prime is 123140448157. The reversal of 123140448122 is 221844041321.

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., 81402366721 + 41738081401 = 285311^2 + 204299^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30785112029 + ... + 30785112032.

Almost surely, 2^123140448122 is an apocalyptic number.

123140448122 is a deficient number, since it is larger than the sum of its proper divisors (61570224064).

123140448122 is an equidigital number, since it uses as much as digits as its factorization.

123140448122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61570224063.

The product of its (nonzero) digits is 12288, while the sum is 32.

Adding to 123140448122 its reverse (221844041321), we get a palindrome (344984489443).

The spelling of 123140448122 in words is "one hundred twenty-three billion, one hundred forty million, four hundred forty-eight thousand, one hundred twenty-two".