1020100104 has 24 divisors (see below), whose sum is σ = 2762771310. Its totient is φ = 340033344.

The previous prime is 1020100099. The next prime is 1020100171. The reversal of 1020100104 is 4010010201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 515199204 + 504900900 = 22698^2 + 22470^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7083957 + ... + 7084100.

Almost surely, 2^1020100104 is an apocalyptic number.

It is an amenable number.

1020100104 is an abundant number, since it is smaller than the sum of its proper divisors (1742671206).

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

1020100104 is a wasteful number, since it uses less digits than its factorization.

1020100104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14168069 (or 14168062 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1020100104 is about 31939.0059958039. The cubic root of 1020100104 is about 1006.6556388619.

Adding to 1020100104 its reverse (4010010201), we get a palindrome (5030110305).

It can be divided in two parts, 1020 and 100104, that added together give a square (101124 = 318²).

The spelling of 1020100104 in words is "one billion, twenty million, one hundred thousand, one hundred four".