123303203442 has 24 divisors (see below), whose sum is σ = 268513075116. Its totient is φ = 40892431776.

The previous prime is 123303203423. The next prime is 123303203447. The reversal of 123303203442 is 244302303321.

123303203442 is a `hidden beast` number, since 1 + 2 + 330 + 320 + 3 + 4 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 104717607201 + 18585596241 = 323601^2 + 136329^2 .

It is not an unprimeable number, because it can be changed into a prime (123303203447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17382693 + ... + 17389784.

Almost surely, 2^123303203442 is an apocalyptic number.

123303203442 is an abundant number, since it is smaller than the sum of its proper divisors (145209871674).

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

123303203442 is a wasteful number, since it uses less digits than its factorization.

123303203442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34772682 (or 34772679 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 123303203442 its reverse (244302303321), we get a palindrome (367605506763).

The spelling of 123303203442 in words is "one hundred twenty-three billion, three hundred three million, two hundred three thousand, four hundred forty-two".