102100443 has 4 divisors (see below), whose sum is σ = 136133928. Its totient is φ = 68066960.

The previous prime is 102100421. The next prime is 102100451. The reversal of 102100443 is 344001201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102100443 - 2¹² = 102096347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102101443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17016738 + ... + 17016743.

It is an arithmetic number, because the mean of its divisors is an integer number (34033482).

Almost surely, 2^102100443 is an apocalyptic number.

102100443 is a deficient number, since it is larger than the sum of its proper divisors (34033485).

102100443 is an equidigital number, since it uses as much as digits as its factorization.

102100443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34033484.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102100443 is about 10104.4763842566. The cubic root of 102100443 is about 467.3861894213.

Adding to 102100443 its reverse (344001201), we get a palindrome (446101644).

The spelling of 102100443 in words is "one hundred two million, one hundred thousand, four hundred forty-three".