420336906 has 16 divisors (see below), whose sum is σ = 917098848. Its totient is φ = 127374800.

The previous prime is 420336887. The next prime is 420336907. The reversal of 420336906 is 609633024.

It is a super-2 number, since 2×420336906² = 353366229091305672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (420336907) 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, 3184305 + ... + 3184436.

It is an arithmetic number, because the mean of its divisors is an integer number (57318678).

Almost surely, 2^420336906 is an apocalyptic number.

420336906 is an abundant number, since it is smaller than the sum of its proper divisors (496761942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420336906 is a wasteful number, since it uses less digits than its factorization.

420336906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368757.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 420336906 is about 20502.1195489637. The cubic root of 420336906 is about 749.0874269532.

The spelling of 420336906 in words is "four hundred twenty million, three hundred thirty-six thousand, nine hundred six".