102444643 has 12 divisors (see below), whose sum is σ = 119336112. Its totient is φ = 87687600.

The previous prime is 102444613. The next prime is 102444653. The reversal of 102444643 is 346444201.

It is not a de Polignac number, because 102444643 - 2⁵ = 102444611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102444613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62946 + ... + 64552.

It is an arithmetic number, because the mean of its divisors is an integer number (9944676).

Almost surely, 2^102444643 is an apocalyptic number.

102444643 is a deficient number, since it is larger than the sum of its proper divisors (16891469).

102444643 is a wasteful number, since it uses less digits than its factorization.

102444643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922 (or 2915 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 102444643 is about 10121.4941090730. The cubic root of 102444643 is about 467.9108162175.

Adding to 102444643 its reverse (346444201), we get a palindrome (448888844).

The spelling of 102444643 in words is "one hundred two million, four hundred forty-four thousand, six hundred forty-three".