102440843 has 4 divisors (see below), whose sum is σ = 102582480. Its totient is φ = 102299208.

The previous prime is 102440839. The next prime is 102440851. The reversal of 102440843 is 348044201.

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 102440843 - 2² = 102440839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102440803) 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, 69728 + ... + 71181.

It is an arithmetic number, because the mean of its divisors is an integer number (25645620).

Almost surely, 2^102440843 is an apocalyptic number.

102440843 is a deficient number, since it is larger than the sum of its proper divisors (141637).

102440843 is an equidigital number, since it uses as much as digits as its factorization.

102440843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141636.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 102440843 is about 10121.3063880114. The cubic root of 102440843 is about 467.9050307089.

The spelling of 102440843 in words is "one hundred two million, four hundred forty thousand, eight hundred forty-three".