420545802 has 16 divisors (see below), whose sum is σ = 841300992. Its totient is φ = 140147040.

The previous prime is 420545771. The next prime is 420545803. The reversal of 420545802 is 208545024.

It is a self number, because there is not a number n which added to its sum of digits gives 420545802.

It is not an unprimeable number, because it can be changed into a prime (420545803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32038 + ... + 43214.

It is an arithmetic number, because the mean of its divisors is an integer number (52581312).

Almost surely, 2^420545802 is an apocalyptic number.

420545802 is an abundant number, since it is smaller than the sum of its proper divisors (420755190).

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

420545802 is a wasteful number, since it uses less digits than its factorization.

420545802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17453.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 420545802 is about 20507.2134138210. The cubic root of 420545802 is about 749.2114984220.

The spelling of 420545802 in words is "four hundred twenty million, five hundred forty-five thousand, eight hundred two".