149206241 has 2 divisors, whose sum is σ = 149206242. Its totient is φ = 149206240.

The previous prime is 149206219. The next prime is 149206243. The reversal of 149206241 is 142602941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149206225 + 16 = 12215^2 + 4^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149206241 is a prime.

Together with 149206243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149206243) 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, 74603120 + 74603121.

It is an arithmetic number, because the mean of its divisors is an integer number (74603121).

Almost surely, 2^149206241 is an apocalyptic number.

It is an amenable number.

149206241 is a deficient number, since it is larger than the sum of its proper divisors (1).

149206241 is an equidigital number, since it uses as much as digits as its factorization.

149206241 is an odious number, because the sum of its binary digits is odd.

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

The square root of 149206241 is about 12215.0006549324. Note that the first 3 decimals coincide. The cubic root of 149206241 is about 530.3904101016.

The spelling of 149206241 in words is "one hundred forty-nine million, two hundred six thousand, two hundred forty-one".