47142149 has 2 divisors, whose sum is σ = 47142150. Its totient is φ = 47142148.

The previous prime is 47142133. The next prime is 47142163. The reversal of 47142149 is 94124174.

47142149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47128225 + 13924 = 6865^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 47142149 - 2⁴ = 47142133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47142449) 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, 23571074 + 23571075.

It is an arithmetic number, because the mean of its divisors is an integer number (23571075).

Almost surely, 2^47142149 is an apocalyptic number.

It is an amenable number.

47142149 is a deficient number, since it is larger than the sum of its proper divisors (1).

47142149 is an equidigital number, since it uses as much as digits as its factorization.

47142149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 47142149 is about 6866.0140547482. The cubic root of 47142149 is about 361.2460652581.

The spelling of 47142149 in words is "forty-seven million, one hundred forty-two thousand, one hundred forty-nine".