421042207 has 2 divisors, whose sum is σ = 421042208. Its totient is φ = 421042206.

The previous prime is 421042201. The next prime is 421042249. The reversal of 421042207 is 702240124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421042207 - 2³ = 421042199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421042201) 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, 210521103 + 210521104.

It is an arithmetic number, because the mean of its divisors is an integer number (210521104).

Almost surely, 2^421042207 is an apocalyptic number.

421042207 is a deficient number, since it is larger than the sum of its proper divisors (1).

421042207 is an equidigital number, since it uses as much as digits as its factorization.

421042207 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 22.

The square root of 421042207 is about 20519.3130245630. The cubic root of 421042207 is about 749.5061679483.

The spelling of 421042207 in words is "four hundred twenty-one million, forty-two thousand, two hundred seven".