102470729 has 2 divisors, whose sum is σ = 102470730. Its totient is φ = 102470728.

The previous prime is 102470707. The next prime is 102470737. The reversal of 102470729 is 927074201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101042704 + 1428025 = 10052^2 + 1195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102470729 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 102470695 and 102470704.

It is not a weakly prime, because it can be changed into another prime (102472729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51235364 + 51235365.

It is an arithmetic number, because the mean of its divisors is an integer number (51235365).

Almost surely, 2^102470729 is an apocalyptic number.

It is an amenable number.

102470729 is a deficient number, since it is larger than the sum of its proper divisors (1).

102470729 is an equidigital number, since it uses as much as digits as its factorization.

102470729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 102470729 is about 10122.7826707877. The cubic root of 102470729 is about 467.9505283499.

The spelling of 102470729 in words is "one hundred two million, four hundred seventy thousand, seven hundred twenty-nine".