104212520 has 16 divisors (see below), whose sum is σ = 234478260. Its totient is φ = 41684992.

The previous prime is 104212513. The next prime is 104212523. The reversal of 104212520 is 25212401.

It can be written as a sum of positive squares in 2 ways, for example, as 103510276 + 702244 = 10174^2 + 838^2 .

It is not an unprimeable number, because it can be changed into a prime (104212523) 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, 1302617 + ... + 1302696.

Almost surely, 2^104212520 is an apocalyptic number.

104212520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104212520 is an abundant number, since it is smaller than the sum of its proper divisors (130265740).

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

104212520 is a wasteful number, since it uses less digits than its factorization.

104212520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605324 (or 2605320 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 104212520 is about 10208.4533598386. The cubic root of 104212520 is about 470.5870437347.

Adding to 104212520 its reverse (25212401), we get a palindrome (129424921).

The spelling of 104212520 in words is "one hundred four million, two hundred twelve thousand, five hundred twenty".