102402444 has 12 divisors (see below), whose sum is σ = 238939064. Its totient is φ = 34134144.

The previous prime is 102402439. The next prime is 102402449. The reversal of 102402444 is 444204201.

It is an interprime number because it is at equal distance from previous prime (102402439) and next prime (102402449).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 102402444.

It is not an unprimeable number, because it can be changed into a prime (102402449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4266757 + ... + 4266780.

Almost surely, 2^102402444 is an apocalyptic number.

It is an amenable number.

102402444 is an abundant number, since it is smaller than the sum of its proper divisors (136536620).

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

102402444 is a wasteful number, since it uses less digits than its factorization.

102402444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533544 (or 8533542 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 102402444 is about 10119.4092712964. The cubic root of 102402444 is about 467.8465601154.

Adding to 102402444 its reverse (444204201), we get a palindrome (546606645).

The spelling of 102402444 in words is "one hundred two million, four hundred two thousand, four hundred forty-four".