154149 has 4 divisors (see below), whose sum is σ = 205536. Its totient is φ = 102764.

The previous prime is 154127. The next prime is 154153. The reversal of 154149 is 941451.

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.

It is a cyclic number.

It is not a de Polignac number, because 154149 - 2¹² = 150053 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154159) 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, 25689 + ... + 25694.

It is an arithmetic number, because the mean of its divisors is an integer number (51384).

2¹⁵⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

154149 is a deficient number, since it is larger than the sum of its proper divisors (51387).

154149 is an equidigital number, since it uses as much as digits as its factorization.

154149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51386.

The product of its digits is 720, while the sum is 24.

The square root of 154149 is about 392.6181350880. The cubic root of 154149 is about 53.6183654672.

It can be divided in two parts, 154 and 149, that added together give a palindrome (303).

The spelling of 154149 in words is "one hundred fifty-four thousand, one hundred forty-nine".