149543 has 2 divisors, whose sum is σ = 149544. Its totient is φ = 149542.

The previous prime is 149533. The next prime is 149551. The reversal of 149543 is 345941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149543 - 2⁸ = 149287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74771 + 74772.

It is an arithmetic number, because the mean of its divisors is an integer number (74772).

2¹⁴⁹⁵⁴³ is an apocalyptic number.

149543 is a deficient number, since it is larger than the sum of its proper divisors (1).

149543 is an equidigital number, since it uses as much as digits as its factorization.

149543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 149543 is about 386.7079001003. The cubic root of 149543 is about 53.0789141267.

The spelling of 149543 in words is "one hundred forty-nine thousand, five hundred forty-three".