421962601 has 2 divisors, whose sum is σ = 421962602. Its totient is φ = 421962600.

The previous prime is 421962599. The next prime is 421962641. The reversal of 421962601 is 106269124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245736976 + 176225625 = 15676^2 + 13275^2 .

It is a cyclic number.

It is not a de Polignac number, because 421962601 - 2¹ = 421962599 is a prime.

Together with 421962599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (421962641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210981300 + 210981301.

It is an arithmetic number, because the mean of its divisors is an integer number (210981301).

Almost surely, 2^421962601 is an apocalyptic number.

It is an amenable number.

421962601 is a deficient number, since it is larger than the sum of its proper divisors (1).

421962601 is an equidigital number, since it uses as much as digits as its factorization.

421962601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 421962601 is about 20541.7282865878. The cubic root of 421962601 is about 750.0519081110.

The spelling of 421962601 in words is "four hundred twenty-one million, nine hundred sixty-two thousand, six hundred one".