210102047 has 2 divisors, whose sum is σ = 210102048. Its totient is φ = 210102046.

The previous prime is 210102041. The next prime is 210102049. The reversal of 210102047 is 740201012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210102047 is a prime.

Together with 210102049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210102041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051023 + 105051024.

It is an arithmetic number, because the mean of its divisors is an integer number (105051024).

Almost surely, 2^210102047 is an apocalyptic number.

210102047 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102047 is an equidigital number, since it uses as much as digits as its factorization.

210102047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 210102047 is about 14494.8972745584. The cubic root of 210102047 is about 594.4884589557.

Adding to 210102047 its reverse (740201012), we get a palindrome (950303059).

The spelling of 210102047 in words is "two hundred ten million, one hundred two thousand, forty-seven".