420726799 has 2 divisors, whose sum is σ = 420726800. Its totient is φ = 420726798.

The previous prime is 420726797. The next prime is 420726847. The reversal of 420726799 is 997627024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420726799 - 2¹ = 420726797 is a prime.

It is a super-2 number, since 2×420726799² = 354022078793572802, which contains 22 as substring.

Together with 420726797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420726797) 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, 210363399 + 210363400.

It is an arithmetic number, because the mean of its divisors is an integer number (210363400).

Almost surely, 2^420726799 is an apocalyptic number.

420726799 is a deficient number, since it is larger than the sum of its proper divisors (1).

420726799 is an equidigital number, since it uses as much as digits as its factorization.

420726799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 420726799 is about 20511.6259472525. The cubic root of 420726799 is about 749.3189663707.

The spelling of 420726799 in words is "four hundred twenty million, seven hundred twenty-six thousand, seven hundred ninety-nine".