102409147 has 2 divisors, whose sum is σ = 102409148. Its totient is φ = 102409146.

The previous prime is 102409129. The next prime is 102409157. The reversal of 102409147 is 741904201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102409147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102409127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51204573 + 51204574.

It is an arithmetic number, because the mean of its divisors is an integer number (51204574).

Almost surely, 2^102409147 is an apocalyptic number.

102409147 is a deficient number, since it is larger than the sum of its proper divisors (1).

102409147 is an equidigital number, since it uses as much as digits as its factorization.

102409147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 102409147 is about 10119.7404610988. The cubic root of 102409147 is about 467.8567679026.

The spelling of 102409147 in words is "one hundred two million, four hundred nine thousand, one hundred forty-seven".