102001044 has 96 divisors (see below), whose sum is σ = 267079680. Its totient is φ = 30146688.

The previous prime is 102001043. The next prime is 102001051. The reversal of 102001044 is 440100201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277749 + ... + 278115.

It is an arithmetic number, because the mean of its divisors is an integer number (2782080).

Almost surely, 2^102001044 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 102001044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133539840).

102001044 is an abundant number, since it is smaller than the sum of its proper divisors (165078636).

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

102001044 is a wasteful number, since it uses less digits than its factorization.

102001044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 467 counting only the distinct ones).

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

The square root of 102001044 is about 10099.5566239316. The cubic root of 102001044 is about 467.2344669187.

Adding to 102001044 its reverse (440100201), we get a palindrome (542101245).

The spelling of 102001044 in words is "one hundred two million, one thousand, forty-four".