8420023424 has 16 divisors (see below), whose sum is σ = 16774265670. Its totient is φ = 4210011648.

The previous prime is 8420023393. The next prime is 8420023441. The reversal of 8420023424 is 4243200248.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5212840000 + 3207183424 = 72200^2 + 56632^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32890589 + ... + 32890844.

Almost surely, 2^8420023424 is an apocalyptic number.

It is an amenable number.

8420023424 is a deficient number, since it is larger than the sum of its proper divisors (8354242246).

8420023424 is an equidigital number, since it uses as much as digits as its factorization.

8420023424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65781447 (or 65781435 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 8420023424 is about 91760.6856120855. The cubic root of 8420023424 is about 2034.4066489867.

The spelling of 8420023424 in words is "eight billion, four hundred twenty million, twenty-three thousand, four hundred twenty-four".