104202521 has 2 divisors, whose sum is σ = 104202522. Its totient is φ = 104202520.

The previous prime is 104202467. The next prime is 104202529. The reversal of 104202521 is 125202401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84842521 + 19360000 = 9211^2 + 4400^2 .

It is a cyclic number.

It is not a de Polignac number, because 104202521 - 2¹⁰ = 104201497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104202521.

It is not a weakly prime, because it can be changed into another prime (104202529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52101260 + 52101261.

It is an arithmetic number, because the mean of its divisors is an integer number (52101261).

Almost surely, 2^104202521 is an apocalyptic number.

It is an amenable number.

104202521 is a deficient number, since it is larger than the sum of its proper divisors (1).

104202521 is an equidigital number, since it uses as much as digits as its factorization.

104202521 is an evil number, because the sum of its binary digits is even.

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

The square root of 104202521 is about 10207.9636069100. The cubic root of 104202521 is about 470.5719925990.

Adding to 104202521 its reverse (125202401), we get a palindrome (229404922).

The spelling of 104202521 in words is "one hundred four million, two hundred two thousand, five hundred twenty-one".