123023401242 has 96 divisors (see below), whose sum is σ = 293578556544. Its totient is φ = 34247808000.

The previous prime is 123023401229. The next prime is 123023401243. The reversal of 123023401242 is 242104320321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123023401243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9914242 + ... + 9926642.

It is an arithmetic number, because the mean of its divisors is an integer number (3058109964).

Almost surely, 2^123023401242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123023401242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146789278272).

123023401242 is an abundant number, since it is smaller than the sum of its proper divisors (170555155302).

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

123023401242 is a wasteful number, since it uses less digits than its factorization.

123023401242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284 (or 13277 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 123023401242 its reverse (242104320321), we get a palindrome (365127721563).

The spelling of 123023401242 in words is "one hundred twenty-three billion, twenty-three million, four hundred one thousand, two hundred forty-two".