104001220 has 12 divisors (see below), whose sum is σ = 218402604. Its totient is φ = 41600480.

The previous prime is 104001203. The next prime is 104001253. The reversal of 104001220 is 22100401.

It can be written as a sum of positive squares in 2 ways, for example, as 13675204 + 90326016 = 3698^2 + 9504^2 .

It is a super-2 number, since 2×104001220² = 21632507522976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 104001197 and 104001206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600011 + ... + 2600050.

It is an arithmetic number, because the mean of its divisors is an integer number (18200217).

Almost surely, 2^104001220 is an apocalyptic number.

104001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104001220 is an abundant number, since it is smaller than the sum of its proper divisors (114401384).

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

104001220 is a wasteful number, since it uses less digits than its factorization.

104001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200070 (or 5200068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 104001220 is about 10198.0988424314. The cubic root of 104001220 is about 470.2687764013.

Adding to 104001220 its reverse (22100401), we get a palindrome (126101621).

The spelling of 104001220 in words is "one hundred four million, one thousand, two hundred twenty".