420842544 has 40 divisors (see below), whose sum is σ = 1103411520. Its totient is φ = 138186048.

The previous prime is 420842537. The next prime is 420842549. The reversal of 420842544 is 445248024.

It is not an unprimeable number, because it can be changed into a prime (420842549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62214 + ... + 68645.

It is an arithmetic number, because the mean of its divisors is an integer number (27585288).

Almost surely, 2^420842544 is an apocalyptic number.

It is an amenable number.

420842544 is an abundant number, since it is smaller than the sum of its proper divisors (682568976).

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

420842544 is a wasteful number, since it uses less digits than its factorization.

420842544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130937 (or 130931 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 33.

The square root of 420842544 is about 20514.4472019111. The cubic root of 420842544 is about 749.3876744348.

The spelling of 420842544 in words is "four hundred twenty million, eight hundred forty-two thousand, five hundred forty-four".