102443109 has 8 divisors (see below), whose sum is σ = 141300960. Its totient is φ = 65940336.

The previous prime is 102443101. The next prime is 102443111. The reversal of 102443109 is 901344201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102443109 - 2³ = 102443101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102443101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588667 + ... + 588840.

It is an arithmetic number, because the mean of its divisors is an integer number (17662620).

Almost surely, 2^102443109 is an apocalyptic number.

It is an amenable number.

102443109 is a deficient number, since it is larger than the sum of its proper divisors (38857851).

102443109 is a wasteful number, since it uses less digits than its factorization.

102443109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177539.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 102443109 is about 10121.4183294635. The cubic root of 102443109 is about 467.9084807162.

It can be divided in two parts, 102 and 443109, that added together give a triangular number (443211 = T₉₄₁).

The spelling of 102443109 in words is "one hundred two million, four hundred forty-three thousand, one hundred nine".