1700281421 has 2 divisors, whose sum is σ = 1700281422. Its totient is φ = 1700281420.

The previous prime is 1700281409. The next prime is 1700281423. The reversal of 1700281421 is 1241820071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1616924521 + 83356900 = 40211^2 + 9130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1700281421 is a prime.

It is a Sophie Germain prime.

Together with 1700281423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1700281423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 850140710 + 850140711.

It is an arithmetic number, because the mean of its divisors is an integer number (850140711).

Almost surely, 2^1700281421 is an apocalyptic number.

It is an amenable number.

1700281421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1700281421 is an equidigital number, since it uses as much as digits as its factorization.

1700281421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 1700281421 is about 41234.4688458576. The cubic root of 1700281421 is about 1193.5490453982.

The spelling of 1700281421 in words is "one billion, seven hundred million, two hundred eighty-one thousand, four hundred twenty-one".