104206257 has 20 divisors (see below), whose sum is σ = 156119040. Its totient is φ = 69268824.

The previous prime is 104206237. The next prime is 104206301. The reversal of 104206257 is 752602401.

104206257 is a `hidden beast` number, since 10 + 4 + 20 + 625 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-104206257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 104206257.

It is not an unprimeable number, because it can be changed into a prime (104206217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29344 + ... + 32702.

It is an arithmetic number, because the mean of its divisors is an integer number (7805952).

Almost surely, 2^104206257 is an apocalyptic number.

It is an amenable number.

104206257 is a deficient number, since it is larger than the sum of its proper divisors (51912783).

104206257 is an equidigital number, since it uses as much as digits as its factorization.

104206257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3754 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 104206257 is about 10208.1465996527. The cubic root of 104206257 is about 470.5776163783.

Adding to 104206257 its reverse (752602401), we get a palindrome (856808658).

The spelling of 104206257 in words is "one hundred four million, two hundred six thousand, two hundred fifty-seven".