1020100044 has 48 divisors (see below), whose sum is σ = 2528556800. Its totient is φ = 319173696.

The previous prime is 1020100033. The next prime is 1020100073. The reversal of 1020100044 is 4400010201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4329 + ... + 45375.

Almost surely, 2^1020100044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020100044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264278400).

1020100044 is an abundant number, since it is smaller than the sum of its proper divisors (1508456756).

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

1020100044 is a wasteful number, since it uses less digits than its factorization.

1020100044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41182 (or 41180 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1020100044 is about 31939.0050565136. The cubic root of 1020100044 is about 1006.6556191255.

Adding to 1020100044 its reverse (4400010201), we get a palindrome (5420110245).

The spelling of 1020100044 in words is "one billion, twenty million, one hundred thousand, forty-four".