100442122440 has 64 divisors (see below), whose sum is σ = 328719677760. Its totient is φ = 24349605120.

The previous prime is 100442122421. The next prime is 100442122441. The reversal of 100442122440 is 44221244001.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 100442122440.

It is not an unprimeable number, because it can be changed into a prime (100442122441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38044939 + ... + 38047578.

It is an arithmetic number, because the mean of its divisors is an integer number (5136244965).

Almost surely, 2^100442122440 is an apocalyptic number.

100442122440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100442122440 is an abundant number, since it is smaller than the sum of its proper divisors (228277555320).

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

100442122440 is a wasteful number, since it uses less digits than its factorization.

100442122440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76092542 (or 76092538 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 100442122440 its reverse (44221244001), we get a palindrome (144663366441).

The spelling of 100442122440 in words is "one hundred billion, four hundred forty-two million, one hundred twenty-two thousand, four hundred forty".