104020 has 24 divisors (see below), whose sum is σ = 249984. Its totient is φ = 35616.

The previous prime is 104009. The next prime is 104021. The reversal of 104020 is 20401.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 103994 and 104012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (10416).

2¹⁰⁴⁰²⁰ is an apocalyptic number.

104020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104020 is an abundant number, since it is smaller than the sum of its proper divisors (145964).

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

104020 is a wasteful number, since it uses less digits than its factorization.

104020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 104020 is about 322.5213171249. The cubic root of 104020 is about 47.0297080928.

Adding to 104020 its reverse (20401), we get a palindrome (124421).

The spelling of 104020 in words is "one hundred four thousand, twenty", and thus it is an iban number.