123001242 has 128 divisors (see below), whose sum is σ = 321699840. Its totient is φ = 30663360.

The previous prime is 123001237. The next prime is 123001243. The reversal of 123001242 is 242100321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123001243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2860473 + ... + 2860515.

It is an arithmetic number, because the mean of its divisors is an integer number (2513280).

Almost surely, 2^123001242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123001242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160849920).

123001242 is an abundant number, since it is smaller than the sum of its proper divisors (198698598).

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

123001242 is a wasteful number, since it uses less digits than its factorization.

123001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 123001242 is about 11090.5924999524. The cubic root of 123001242 is about 497.3206572241.

Adding to 123001242 its reverse (242100321), we get a palindrome (365101563).

The spelling of 123001242 in words is "one hundred twenty-three million, one thousand, two hundred forty-two".