123023311242 has 64 divisors (see below), whose sum is σ = 278990382720. Its totient is φ = 35851901184.

The previous prime is 123023311207. The next prime is 123023311249. The reversal of 123023311242 is 242113320321.

It is not an unprimeable number, because it can be changed into a prime (123023311249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7693968 + ... + 7709940.

It is an arithmetic number, because the mean of its divisors is an integer number (4359224730).

Almost surely, 2^123023311242 is an apocalyptic number.

123023311242 is an abundant number, since it is smaller than the sum of its proper divisors (155967071478).

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

123023311242 is a wasteful number, since it uses less digits than its factorization.

123023311242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21207.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 123023311242 its reverse (242113320321), we get a palindrome (365136631563).

The spelling of 123023311242 in words is "one hundred twenty-three billion, twenty-three million, three hundred eleven thousand, two hundred forty-two".