1002404144 has 20 divisors (see below), whose sum is σ = 2219609424. Its totient is φ = 429601728.

The previous prime is 1002404131. The next prime is 1002404149. The reversal of 1002404144 is 4414042001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1002404149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4474907 + ... + 4475130.

Almost surely, 2^1002404144 is an apocalyptic number.

1002404144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1002404144 is an abundant number, since it is smaller than the sum of its proper divisors (1217205280).

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

1002404144 is an equidigital number, since it uses as much as digits as its factorization.

1002404144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950052 (or 8950046 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1002404144 is about 31660.7666363277. The cubic root of 1002404144 is about 1000.8007399777.

Adding to 1002404144 its reverse (4414042001), we get a palindrome (5416446145).

The spelling of 1002404144 in words is "one billion, two million, four hundred four thousand, one hundred forty-four".