104213257 has 2 divisors, whose sum is σ = 104213258. Its totient is φ = 104213256.

The previous prime is 104213191. The next prime is 104213273. The reversal of 104213257 is 752312401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98624761 + 5588496 = 9931^2 + 2364^2 .

It is a cyclic number.

It is not a de Polignac number, because 104213257 - 2⁷ = 104213129 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (104213287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52106628 + 52106629.

It is an arithmetic number, because the mean of its divisors is an integer number (52106629).

Almost surely, 2^104213257 is an apocalyptic number.

It is an amenable number.

104213257 is a deficient number, since it is larger than the sum of its proper divisors (1).

104213257 is an equidigital number, since it uses as much as digits as its factorization.

104213257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 104213257 is about 10208.4894573095. The cubic root of 104213257 is about 470.5881530763.

Adding to 104213257 its reverse (752312401), we get a palindrome (856525658).

The spelling of 104213257 in words is "one hundred four million, two hundred thirteen thousand, two hundred fifty-seven".