142206149 has 2 divisors, whose sum is σ = 142206150. Its totient is φ = 142206148.

The previous prime is 142206131. The next prime is 142206151. The reversal of 142206149 is 941602241.

142206149 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., 73017025 + 69189124 = 8545^2 + 8318^2 .

It is a cyclic number.

It is not a de Polignac number, because 142206149 - 2¹⁶ = 142140613 is a prime.

Together with 142206151, 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 (142206179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71103074 + 71103075.

It is an arithmetic number, because the mean of its divisors is an integer number (71103075).

Almost surely, 2^142206149 is an apocalyptic number.

It is an amenable number.

142206149 is a deficient number, since it is larger than the sum of its proper divisors (1).

142206149 is an equidigital number, since it uses as much as digits as its factorization.

142206149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 142206149 is about 11925.0219706297. The cubic root of 142206149 is about 521.9626874970.

The spelling of 142206149 in words is "one hundred forty-two million, two hundred six thousand, one hundred forty-nine".