103442131023421 has 2 divisors, whose sum is σ = 103442131023422. Its totient is φ = 103442131023420.

The previous prime is 103442131023389. The next prime is 103442131023431. The reversal of 103442131023421 is 124320131244301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99444074787225 + 3998056236196 = 9972165^2 + 1999514^2 .

It is an emirp because it is prime and its reverse (124320131244301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103442131023421 - 2⁵ = 103442131023389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103442131023431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51721065511710 + 51721065511711.

It is an arithmetic number, because the mean of its divisors is an integer number (51721065511711).

Almost surely, 2^{103442131023421} is an apocalyptic number.

It is an amenable number.

103442131023421 is a deficient number, since it is larger than the sum of its proper divisors (1).

103442131023421 is an equidigital number, since it uses as much as digits as its factorization.

103442131023421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 103442131023421 its reverse (124320131244301), we get a palindrome (227762262267722).

The spelling of 103442131023421 in words is "one hundred three trillion, four hundred forty-two billion, one hundred thirty-one million, twenty-three thousand, four hundred twenty-one".