123632036442 has 48 divisors (see below), whose sum is σ = 269331555168. Its totient is φ = 40986015840.

The previous prime is 123632036441. The next prime is 123632036447. The reversal of 123632036442 is 244630236321.

123632036442 is a `hidden beast` number, since 1 + 2 + 3 + 6 + 3 + 2 + 0 + 3 + 644 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 123632036397 and 123632036406.

It is not an unprimeable number, because it can be changed into a prime (123632036441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5659513 + ... + 5681315.

It is an arithmetic number, because the mean of its divisors is an integer number (5611074066).

Almost surely, 2^123632036442 is an apocalyptic number.

123632036442 is an abundant number, since it is smaller than the sum of its proper divisors (145699518726).

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

123632036442 is a wasteful number, since it uses less digits than its factorization.

123632036442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23515 (or 23512 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 123632036442 in words is "one hundred twenty-three billion, six hundred thirty-two million, thirty-six thousand, four hundred forty-two".