1020104 has 16 divisors (see below), whose sum is σ = 1979100. Its totient is φ = 492352.

The previous prime is 1020101. The next prime is 1020109. The reversal of 1020104 is 4010201.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 4 = 1010^2 + 2^2 .

It is a super-2 number, since 2×1020104² = 2081224341632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1020091 and 1020100.

It is not an unprimeable number, because it can be changed into a prime (1020101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1967 + ... + 2430.

2^1020104 is an apocalyptic number.

It is an amenable number.

1020104 is a deficient number, since it is larger than the sum of its proper divisors (958996).

1020104 is a wasteful number, since it uses less digits than its factorization.

1020104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4428 counting only the distinct ones).

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

The square root of 1020104 is about 1010.0019801961. The cubic root of 1020104 is about 100.6656920411.

Adding to 1020104 its reverse (4010201), we get a palindrome (5030305).

The spelling of 1020104 in words is "one million, twenty thousand, one hundred four".