102043636 has 12 divisors (see below), whose sum is σ = 179484228. Its totient is φ = 50762432.

The previous prime is 102043631. The next prime is 102043651. The reversal of 102043636 is 636340201.

It can be written as a sum of positive squares in 2 ways, for example, as 56400100 + 45643536 = 7510^2 + 6756^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102043636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102043631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63961 + ... + 65536.

It is an arithmetic number, because the mean of its divisors is an integer number (14957019).

Almost surely, 2^102043636 is an apocalyptic number.

It is an amenable number.

102043636 is a deficient number, since it is larger than the sum of its proper divisors (77440592).

102043636 is a wasteful number, since it uses less digits than its factorization.

102043636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129698 (or 129696 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 102043636 is about 10101.6650112741. The cubic root of 102043636 is about 467.2994913550.

Adding to 102043636 its reverse (636340201), we get a palindrome (738383837).

The spelling of 102043636 in words is "one hundred two million, forty-three thousand, six hundred thirty-six".