43102420117 has 2 divisors, whose sum is σ = 43102420118. Its totient is φ = 43102420116.

The previous prime is 43102420091. The next prime is 43102420139. The reversal of 43102420117 is 71102420134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41913963441 + 1188456676 = 204729^2 + 34474^2 .

It is a cyclic number.

It is not a de Polignac number, because 43102420117 - 2²³ = 43094031509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43102420091 and 43102420100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43102420217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21551210058 + 21551210059.

It is an arithmetic number, because the mean of its divisors is an integer number (21551210059).

Almost surely, 2^43102420117 is an apocalyptic number.

It is an amenable number.

43102420117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43102420117 is an equidigital number, since it uses as much as digits as its factorization.

43102420117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The spelling of 43102420117 in words is "forty-three billion, one hundred two million, four hundred twenty thousand, one hundred seventeen".