102040421343941 has 2 divisors, whose sum is σ = 102040421343942. Its totient is φ = 102040421343940.

The previous prime is 102040421343901. The next prime is 102040421344061. The reversal of 102040421343941 is 149343124040201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99875538750625 + 2164882593316 = 9993775^2 + 1471354^2 .

It is a cyclic number.

It is not a de Polignac number, because 102040421343941 - 2¹⁴ = 102040421327557 is a prime.

It is a super-2 number, since 2×102040421343941² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102040421343895 and 102040421343904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102040421343901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51020210671970 + 51020210671971.

It is an arithmetic number, because the mean of its divisors is an integer number (51020210671971).

Almost surely, 2^{102040421343941} is an apocalyptic number.

It is an amenable number.

102040421343941 is a deficient number, since it is larger than the sum of its proper divisors (1).

102040421343941 is an equidigital number, since it uses as much as digits as its factorization.

102040421343941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 102040421343941 in words is "one hundred two trillion, forty billion, four hundred twenty-one million, three hundred forty-three thousand, nine hundred forty-one".