213042047 has 2 divisors, whose sum is σ = 213042048. Its totient is φ = 213042046.

The previous prime is 213042019. The next prime is 213042083. The reversal of 213042047 is 740240312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213042047 - 2⁸ = 213041791 is a prime.

It is a Chen prime.

It is equal to p_11760233 and since 213042047 and 11760233 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213042547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106521023 + 106521024.

It is an arithmetic number, because the mean of its divisors is an integer number (106521024).

Almost surely, 2^213042047 is an apocalyptic number.

213042047 is a deficient number, since it is larger than the sum of its proper divisors (1).

213042047 is an equidigital number, since it uses as much as digits as its factorization.

213042047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 213042047 is about 14595.9599547272. The cubic root of 213042047 is about 597.2485565142.

Adding to 213042047 its reverse (740240312), we get a palindrome (953282359).

The spelling of 213042047 in words is "two hundred thirteen million, forty-two thousand, forty-seven".