149423 has 2 divisors, whose sum is σ = 149424. Its totient is φ = 149422.

The previous prime is 149419. The next prime is 149441. The reversal of 149423 is 324941.

It is a weak prime.

It is an emirp because it is prime and its reverse (324941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149423 - 2² = 149419 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74711 + 74712.

It is an arithmetic number, because the mean of its divisors is an integer number (74712).

2¹⁴⁹⁴²³ is an apocalyptic number.

149423 is a deficient number, since it is larger than the sum of its proper divisors (1).

149423 is an equidigital number, since it uses as much as digits as its factorization.

149423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 149423 is about 386.5527130936. The cubic root of 149423 is about 53.0647126948.

The spelling of 149423 in words is "one hundred forty-nine thousand, four hundred twenty-three".