420745422 has 16 divisors (see below), whose sum is σ = 842217552. Its totient is φ = 140127360.

The previous prime is 420745379. The next prime is 420745433. The reversal of 420745422 is 224547024.

It is a self number, because there is not a number n which added to its sum of digits gives 420745422.

It is a congruent number.

It is an unprimeable number.

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, 22603 + ... + 36774.

It is an arithmetic number, because the mean of its divisors is an integer number (52638597).

Almost surely, 2^420745422 is an apocalyptic number.

420745422 is an abundant number, since it is smaller than the sum of its proper divisors (421472130).

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

420745422 is a wasteful number, since it uses less digits than its factorization.

420745422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60563.

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 420745422 is about 20512.0799042905. The cubic root of 420745422 is about 749.3300221289.

The spelling of 420745422 in words is "four hundred twenty million, seven hundred forty-five thousand, four hundred twenty-two".