8421000144 has 40 divisors (see below), whose sum is σ = 22122973920. Its totient is φ = 2759422848.

The previous prime is 8421000121. The next prime is 8421000151. The reversal of 8421000144 is 4410001248.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 1483927 + ... + 1489590.

It is an arithmetic number, because the mean of its divisors is an integer number (553074348).

Almost surely, 2^8421000144 is an apocalyptic number.

It is an amenable number.

8421000144 is an abundant number, since it is smaller than the sum of its proper divisors (13701973776).

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

8421000144 is a wasteful number, since it uses less digits than its factorization.

8421000144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973587 (or 2973581 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 8421000144 is about 91766.0075627135. The cubic root of 8421000144 is about 2034.4853094501.

It can be divided in two parts, 842 and 1000144, that multiplied together give a palindrome (842121248).

The spelling of 8421000144 in words is "eight billion, four hundred twenty-one million, one hundred forty-four", and thus it is an aban number.