1704121 has 2 divisors, whose sum is σ = 1704122. Its totient is φ = 1704120.

The previous prime is 1704119. The next prime is 1704137. The reversal of 1704121 is 1214071.

It is an a-pointer prime, because the next prime (1704137) can be obtained adding 1704121 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 622521 = 1040^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1704121 - 2¹ = 1704119 is a prime.

Together with 1704119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1704095 and 1704104.

It is not a weakly prime, because it can be changed into another prime (1704161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852060 + 852061.

It is an arithmetic number, because the mean of its divisors is an integer number (852061).

2^1704121 is an apocalyptic number.

It is an amenable number.

1704121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1704121 is an equidigital number, since it uses as much as digits as its factorization.

1704121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 1704121 is about 1305.4198558318. The cubic root of 1704121 is about 119.4446794940. Note that the first 3 decimals are identical.

Adding to 1704121 its reverse (1214071), we get a palindrome (2918192).

The spelling of 1704121 in words is "one million, seven hundred four thousand, one hundred twenty-one".