420739208 has 16 divisors (see below), whose sum is σ = 789111180. Its totient is φ = 210309568.

The previous prime is 420739199. The next prime is 420739217. The reversal of 420739208 is 802937024.

It is an interprime number because it is at equal distance from previous prime (420739199) and next prime (420739217).

It can be written as a sum of positive squares in 2 ways, for example, as 394340164 + 26399044 = 19858^2 + 5138^2 .

It is a super-3 number, since 3×420739208³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 39866 + ... + 49302.

Almost surely, 2^420739208 is an apocalyptic number.

It is an amenable number.

420739208 is a deficient number, since it is larger than the sum of its proper divisors (368371972).

420739208 is a wasteful number, since it uses less digits than its factorization.

420739208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15016 (or 15012 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 420739208 is about 20511.9284320124. The cubic root of 420739208 is about 749.3263331526.

The spelling of 420739208 in words is "four hundred twenty million, seven hundred thirty-nine thousand, two hundred eight".