420681846 has 16 divisors (see below), whose sum is σ = 906084144. Its totient is φ = 129440544.

The previous prime is 420681841. The next prime is 420681889. The reversal of 420681846 is 648186024.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420681841) 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, 2696601 + ... + 2696756.

It is an arithmetic number, because the mean of its divisors is an integer number (56630259).

Almost surely, 2^420681846 is an apocalyptic number.

420681846 is an abundant number, since it is smaller than the sum of its proper divisors (485402298).

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

420681846 is a wasteful number, since it uses less digits than its factorization.

420681846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393375.

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 420681846 is about 20510.5301247920. The cubic root of 420681846 is about 749.2922781609.

The spelling of 420681846 in words is "four hundred twenty million, six hundred eighty-one thousand, eight hundred forty-six".