421462817 has 2 divisors, whose sum is σ = 421462818. Its totient is φ = 421462816.

The previous prime is 421462777. The next prime is 421462831. The reversal of 421462817 is 718264124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273207841 + 148254976 = 16529^2 + 12176^2 .

It is a cyclic number.

It is not a de Polignac number, because 421462817 - 2⁶ = 421462753 is a prime.

It is a super-2 number, since 2×421462817² = 355261812227150978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421462117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210731408 + 210731409.

It is an arithmetic number, because the mean of its divisors is an integer number (210731409).

Almost surely, 2^421462817 is an apocalyptic number.

It is an amenable number.

421462817 is a deficient number, since it is larger than the sum of its proper divisors (1).

421462817 is an equidigital number, since it uses as much as digits as its factorization.

421462817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 421462817 is about 20529.5595909898. The cubic root of 421462817 is about 749.7556638158.

The spelling of 421462817 in words is "four hundred twenty-one million, four hundred sixty-two thousand, eight hundred seventeen".