102043040321 has 4 divisors (see below), whose sum is σ = 106479694272. Its totient is φ = 97606386372.

The previous prime is 102043040317. The next prime is 102043040339. The reversal of 102043040321 is 123040340201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102043040321 - 2² = 102043040317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102043040293 and 102043040302.

It is not an unprimeable number, because it can be changed into a prime (102043040371) 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, 2218326941 + ... + 2218326986.

It is an arithmetic number, because the mean of its divisors is an integer number (26619923568).

Almost surely, 2^102043040321 is an apocalyptic number.

It is an amenable number.

102043040321 is a deficient number, since it is larger than the sum of its proper divisors (4436653951).

102043040321 is an equidigital number, since it uses as much as digits as its factorization.

102043040321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436653950.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 102043040321 its reverse (123040340201), we get a palindrome (225083380522).

The spelling of 102043040321 in words is "one hundred two billion, forty-three million, forty thousand, three hundred twenty-one".