149945141 has 4 divisors (see below), whose sum is σ = 150542784. Its totient is φ = 149347500.

The previous prime is 149945111. The next prime is 149945143. The reversal of 149945141 is 141549941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141549941 = 13 ⋅10888457.

It is a cyclic number.

It is not a de Polignac number, because 149945141 - 2¹⁸ = 149682997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149945095 and 149945104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149945143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298445 + ... + 298946.

It is an arithmetic number, because the mean of its divisors is an integer number (37635696).

Almost surely, 2^149945141 is an apocalyptic number.

It is an amenable number.

149945141 is a deficient number, since it is larger than the sum of its proper divisors (597643).

149945141 is an equidigital number, since it uses as much as digits as its factorization.

149945141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597642.

The product of its digits is 25920, while the sum is 38.

The square root of 149945141 is about 12245.2088998106. The cubic root of 149945141 is about 531.2645029305.

The spelling of 149945141 in words is "one hundred forty-nine million, nine hundred forty-five thousand, one hundred forty-one".