1704001421 has 4 divisors (see below), whose sum is σ = 1705999932. Its totient is φ = 1702002912.

The previous prime is 1704001393. The next prime is 1704001423. The reversal of 1704001421 is 1241004071.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 791296900 + 912704521 = 28130^2 + 30211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1704001421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1704001393 and 1704001402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1704001423) 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, 997976 + ... + 999681.

It is an arithmetic number, because the mean of its divisors is an integer number (426499983).

Almost surely, 2^1704001421 is an apocalyptic number.

It is an amenable number.

1704001421 is a deficient number, since it is larger than the sum of its proper divisors (1998511).

1704001421 is an equidigital number, since it uses as much as digits as its factorization.

1704001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998510.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1704001421 is about 41279.5520930157. The cubic root of 1704001421 is about 1194.4188559818.

Adding to 1704001421 its reverse (1241004071), we get a palindrome (2945005492).

The spelling of 1704001421 in words is "one billion, seven hundred four million, one thousand, four hundred twenty-one".