102002423144 has 16 divisors (see below), whose sum is σ = 197849528100. Its totient is φ = 49242548992.

The previous prime is 102002423071. The next prime is 102002423147. The reversal of 102002423144 is 441324200201.

It can be written as a sum of positive squares in 2 ways, for example, as 101512332100 + 490091044 = 318610^2 + 22138^2 .

It is not an unprimeable number, because it can be changed into a prime (102002423147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219832577 + ... + 219833040.

Almost surely, 2^102002423144 is an apocalyptic number.

It is an amenable number.

102002423144 is a deficient number, since it is larger than the sum of its proper divisors (95847104956).

102002423144 is a wasteful number, since it uses less digits than its factorization.

102002423144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439665652 (or 439665648 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 102002423144 its reverse (441324200201), we get a palindrome (543326623345).

The spelling of 102002423144 in words is "one hundred two billion, two million, four hundred twenty-three thousand, one hundred forty-four".