421062461 has 2 divisors, whose sum is σ = 421062462. Its totient is φ = 421062460.

The previous prime is 421062457. The next prime is 421062463. The reversal of 421062461 is 164260124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269156836 + 151905625 = 16406^2 + 12325^2 .

It is a cyclic number.

It is not a de Polignac number, because 421062461 - 2² = 421062457 is a prime.

It is a Sophie Germain prime.

Together with 421062463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421062461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421062463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210531230 + 210531231.

It is an arithmetic number, because the mean of its divisors is an integer number (210531231).

Almost surely, 2^421062461 is an apocalyptic number.

It is an amenable number.

421062461 is a deficient number, since it is larger than the sum of its proper divisors (1).

421062461 is an equidigital number, since it uses as much as digits as its factorization.

421062461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 421062461 is about 20519.8065536691. The cubic root of 421062461 is about 749.5181859473.

The spelling of 421062461 in words is "four hundred twenty-one million, sixty-two thousand, four hundred sixty-one".