970421 has 2 divisors, whose sum is σ = 970422. Its totient is φ = 970420.

The previous prime is 970391. The next prime is 970423. The reversal of 970421 is 124079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 196 = 985^2 + 14^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-970421 is a prime.

Together with 970423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (970423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485210 + 485211.

It is an arithmetic number, because the mean of its divisors is an integer number (485211).

2⁹⁷⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

970421 is a deficient number, since it is larger than the sum of its proper divisors (1).

970421 is an equidigital number, since it uses as much as digits as its factorization.

970421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 970421 is about 985.0994873616. The cubic root of 970421 is about 99.0041490626.

The spelling of 970421 in words is "nine hundred seventy thousand, four hundred twenty-one".