420416651 has 2 divisors, whose sum is σ = 420416652. Its totient is φ = 420416650.

The previous prime is 420416627. The next prime is 420416653. The reversal of 420416651 is 156614024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420416651 is a prime.

Together with 420416653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420416653) 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, 210208325 + 210208326.

It is an arithmetic number, because the mean of its divisors is an integer number (210208326).

Almost surely, 2^420416651 is an apocalyptic number.

420416651 is a deficient number, since it is larger than the sum of its proper divisors (1).

420416651 is an equidigital number, since it uses as much as digits as its factorization.

420416651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 420416651 is about 20504.0642556543. The cubic root of 420416651 is about 749.1347954638.

The spelling of 420416651 in words is "four hundred twenty million, four hundred sixteen thousand, six hundred fifty-one".