420501306 has 16 divisors (see below), whose sum is σ = 841376448. Its totient is φ = 140104800.

The previous prime is 420501299. The next prime is 420501317. The reversal of 420501306 is 603105024.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 291 + ... + 29001.

It is an arithmetic number, because the mean of its divisors is an integer number (52586028).

Almost surely, 2^420501306 is an apocalyptic number.

420501306 is an abundant number, since it is smaller than the sum of its proper divisors (420875142).

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

420501306 is a wasteful number, since it uses less digits than its factorization.

420501306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31157.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 420501306 is about 20506.1284985733. The cubic root of 420501306 is about 749.1850739592.

The spelling of 420501306 in words is "four hundred twenty million, five hundred one thousand, three hundred six".