420987475582 has 16 divisors (see below), whose sum is σ = 633105475200. Its totient is φ = 209952743040.

The previous prime is 420987475561. The next prime is 420987475609. The reversal of 420987475582 is 285574789024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420987475582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896082 + ... + 2106442.

It is an arithmetic number, because the mean of its divisors is an integer number (39569092200).

Almost surely, 2^420987475582 is an apocalyptic number.

420987475582 is a deficient number, since it is larger than the sum of its proper divisors (212117999618).

420987475582 is a wasteful number, since it uses less digits than its factorization.

420987475582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212931.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 420987475582 in words is "four hundred twenty billion, nine hundred eighty-seven million, four hundred seventy-five thousand, five hundred eighty-two".