102440343420403 has 2 divisors, whose sum is σ = 102440343420404. Its totient is φ = 102440343420402.

The previous prime is 102440343420361. The next prime is 102440343420421. The reversal of 102440343420403 is 304024343044201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102440343420403 is a prime.

It is not a weakly prime, because it can be changed into another prime (102440343420433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51220171710201 + 51220171710202.

It is an arithmetic number, because the mean of its divisors is an integer number (51220171710202).

Almost surely, 2^{102440343420403} is an apocalyptic number.

102440343420403 is a deficient number, since it is larger than the sum of its proper divisors (1).

102440343420403 is an equidigital number, since it uses as much as digits as its factorization.

102440343420403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 102440343420403 its reverse (304024343044201), we get a palindrome (406464686464604).

The spelling of 102440343420403 in words is "one hundred two trillion, four hundred forty billion, three hundred forty-three million, four hundred twenty thousand, four hundred three".