102420342047 has 2 divisors, whose sum is σ = 102420342048. Its totient is φ = 102420342046.

The previous prime is 102420341977. The next prime is 102420342077. The reversal of 102420342047 is 740243024201.

It is a strong prime.

It is an emirp because it is prime and its reverse (740243024201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102420342047 - 2²⁶ = 102353233183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102420342077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51210171023 + 51210171024.

It is an arithmetic number, because the mean of its divisors is an integer number (51210171024).

Almost surely, 2^102420342047 is an apocalyptic number.

102420342047 is a deficient number, since it is larger than the sum of its proper divisors (1).

102420342047 is an equidigital number, since it uses as much as digits as its factorization.

102420342047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 102420342047 its reverse (740243024201), we get a palindrome (842663366248).

The spelling of 102420342047 in words is "one hundred two billion, four hundred twenty million, three hundred forty-two thousand, forty-seven".