149135321 has 2 divisors, whose sum is σ = 149135322. Its totient is φ = 149135320.

The previous prime is 149135317. The next prime is 149135341. The reversal of 149135321 is 123531941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 29539225 = 10936^2 + 5435^2 .

It is a cyclic number.

It is not a de Polignac number, because 149135321 - 2² = 149135317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149135341) 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, 74567660 + 74567661.

It is an arithmetic number, because the mean of its divisors is an integer number (74567661).

Almost surely, 2^149135321 is an apocalyptic number.

It is an amenable number.

149135321 is a deficient number, since it is larger than the sum of its proper divisors (1).

149135321 is an equidigital number, since it uses as much as digits as its factorization.

149135321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 149135321 is about 12212.0973219181. The cubic root of 149135321 is about 530.3063625691.

The spelling of 149135321 in words is "one hundred forty-nine million, one hundred thirty-five thousand, three hundred twenty-one".