123432310242 has 112 divisors (see below), whose sum is σ = 284348164608. Its totient is φ = 40151648160.

The previous prime is 123432310147. The next prime is 123432310297. The reversal of 123432310242 is 242013234321.

123432310242 is a `hidden beast` number, since 1 + 2 + 343 + 2 + 310 + 2 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 14755153 + ... + 14763515.

Almost surely, 2^123432310242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123432310242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142174082304).

123432310242 is an abundant number, since it is smaller than the sum of its proper divisors (160915854366).

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

123432310242 is an equidigital number, since it uses as much as digits as its factorization.

123432310242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8627 (or 8612 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123432310242 its reverse (242013234321), we get a palindrome (365445544563).

The spelling of 123432310242 in words is "one hundred twenty-three billion, four hundred thirty-two million, three hundred ten thousand, two hundred forty-two".