420336197 has 8 divisors (see below), whose sum is σ = 423363576. Its totient is φ = 417316032.

The previous prime is 420336193. The next prime is 420336199. The reversal of 420336197 is 791633024.

It can be written as a sum of positive squares in 4 ways, for example, as 335585761 + 84750436 = 18319^2 + 9206^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420336197 - 2² = 420336193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420336193) 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 in 7 ways as a sum of consecutive naturals, for example, 171263 + ... + 173699.

It is an arithmetic number, because the mean of its divisors is an integer number (52920447).

Almost surely, 2^420336197 is an apocalyptic number.

It is an amenable number.

420336197 is a deficient number, since it is larger than the sum of its proper divisors (3027379).

420336197 is a wasteful number, since it uses less digits than its factorization.

420336197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 420336197 is about 20502.1022580612. The cubic root of 420336197 is about 749.0870057805.

The spelling of 420336197 in words is "four hundred twenty million, three hundred thirty-six thousand, one hundred ninety-seven".