420446206642 has 64 divisors (see below), whose sum is σ = 863658547200. Its totient is φ = 148441265280.

The previous prime is 420446206627. The next prime is 420446206673. The reversal of 420446206642 is 246602644024.

It is a junction number, because it is equal to n+sod(n) for n = 420446206595 and 420446206604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3056467 + ... + 3191062.

It is an arithmetic number, because the mean of its divisors is an integer number (13494664800).

Almost surely, 2^420446206642 is an apocalyptic number.

420446206642 is an abundant number, since it is smaller than the sum of its proper divisors (443212340558).

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

420446206642 is a wasteful number, since it uses less digits than its factorization.

420446206642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247591.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 420446206642 in words is "four hundred twenty billion, four hundred forty-six million, two hundred six thousand, six hundred forty-two".