102857929 has 2 divisors, whose sum is σ = 102857930. Its totient is φ = 102857928.

The previous prime is 102857917. The next prime is 102857957. The reversal of 102857929 is 929758201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56250000 + 46607929 = 7500^2 + 6827^2 .

It is an emirp because it is prime and its reverse (929758201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102857929 - 2⁵ = 102857897 is a prime.

It is not a weakly prime, because it can be changed into another prime (102858929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51428964 + 51428965.

It is an arithmetic number, because the mean of its divisors is an integer number (51428965).

Almost surely, 2^102857929 is an apocalyptic number.

It is an amenable number.

102857929 is a deficient number, since it is larger than the sum of its proper divisors (1).

102857929 is an equidigital number, since it uses as much as digits as its factorization.

102857929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 102857929 is about 10141.8898140337. The cubic root of 102857929 is about 468.5391930557.

The spelling of 102857929 in words is "one hundred two million, eight hundred fifty-seven thousand, nine hundred twenty-nine".