149001 has 4 divisors (see below), whose sum is σ = 198672. Its totient is φ = 99332.

The previous prime is 148997. The next prime is 149011. The reversal of 149001 is 100941.

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: 100941 = 3 ⋅33647.

It is a cyclic number.

It is not a de Polignac number, because 149001 - 2² = 148997 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 149001.

It is not an unprimeable number, because it can be changed into a prime (149011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24831 + ... + 24836.

It is an arithmetic number, because the mean of its divisors is an integer number (49668).

2¹⁴⁹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

149001 is a deficient number, since it is larger than the sum of its proper divisors (49671).

149001 is an equidigital number, since it uses as much as digits as its factorization.

149001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49670.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 149001 is about 386.0064766296. The cubic root of 149001 is about 53.0147105244.

Adding to 149001 its reverse (100941), we get a palindrome (249942).

The spelling of 149001 in words is "one hundred forty-nine thousand, one".