102044020 has 24 divisors (see below), whose sum is σ = 230777064. Its totient is φ = 37677696.

The previous prime is 102044009. The next prime is 102044021. The reversal of 102044020 is 20440201.

It can be written as a sum of positive squares in 4 ways, for example, as 1162084 + 100881936 = 1078^2 + 10044^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102044021) 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 7 ways as a sum of consecutive naturals, for example, 195979 + ... + 196498.

It is an arithmetic number, because the mean of its divisors is an integer number (9615711).

Almost surely, 2^102044020 is an apocalyptic number.

102044020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102044020 is an abundant number, since it is smaller than the sum of its proper divisors (128733044).

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

102044020 is a wasteful number, since it uses less digits than its factorization.

102044020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392499 (or 392497 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 102044020 is about 10101.6840180239. The cubic root of 102044020 is about 467.3000775185.

Adding to 102044020 its reverse (20440201), we get a palindrome (122484221).

The spelling of 102044020 in words is "one hundred two million, forty-four thousand, twenty".