102040243 has 8 divisors (see below), whose sum is σ = 105139008. Its totient is φ = 98980224.

The previous prime is 102040231. The next prime is 102040261. The reversal of 102040243 is 342040201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102040243 is a prime.

It is a super-2 number, since 2×102040243² = 20824422382998098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102040343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4296 + ... + 14917.

It is an arithmetic number, because the mean of its divisors is an integer number (13142376).

Almost surely, 2^102040243 is an apocalyptic number.

102040243 is a deficient number, since it is larger than the sum of its proper divisors (3098765).

102040243 is a wasteful number, since it uses less digits than its factorization.

102040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19373.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 102040243 is about 10101.4970672668. The cubic root of 102040243 is about 467.2943119866.

Adding to 102040243 its reverse (342040201), we get a palindrome (444080444).

The spelling of 102040243 in words is "one hundred two million, forty thousand, two hundred forty-three".