420436144 has 10 divisors (see below), whose sum is σ = 814595060. Its totient is φ = 210218064.

The previous prime is 420436141. The next prime is 420436147. The reversal of 420436144 is 441634024.

It is an interprime number because it is at equal distance from previous prime (420436141) and next prime (420436147).

It is not an unprimeable number, because it can be changed into a prime (420436141) 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 as a sum of consecutive naturals, namely, 13138614 + ... + 13138645.

It is an arithmetic number, because the mean of its divisors is an integer number (81459506).

Almost surely, 2^420436144 is an apocalyptic number.

It is an amenable number.

420436144 is a deficient number, since it is larger than the sum of its proper divisors (394158916).

420436144 is a wasteful number, since it uses less digits than its factorization.

420436144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26277267 (or 26277261 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 420436144 is about 20504.5395949287. The cubic root of 420436144 is about 749.1463733900.

The spelling of 420436144 in words is "four hundred twenty million, four hundred thirty-six thousand, one hundred forty-four".