149945 has 4 divisors (see below), whose sum is σ = 179940. Its totient is φ = 119952.

The previous prime is 149939. The next prime is 149953. The reversal of 149945 is 549941.

149945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94249 + 55696 = 307^2 + 236^2 .

It is a cyclic number.

It is not a de Polignac number, because 149945 - 2⁸ = 149689 is a prime.

It is a Curzon number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14990 + ... + 14999.

It is an arithmetic number, because the mean of its divisors is an integer number (44985).

2¹⁴⁹⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

149945 is a deficient number, since it is larger than the sum of its proper divisors (29995).

149945 is an equidigital number, since it uses as much as digits as its factorization.

149945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29994.

The product of its digits is 6480, while the sum is 32.

The square root of 149945 is about 387.2273234161. The cubic root of 149945 is about 53.1264336407.

The spelling of 149945 in words is "one hundred forty-nine thousand, nine hundred forty-five".