149541 has 8 divisors (see below), whose sum is σ = 227904. Its totient is φ = 85440.

The previous prime is 149533. The next prime is 149543. The reversal of 149541 is 145941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149541 - 2³ = 149533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3540 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (28488).

2¹⁴⁹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

149541 is a deficient number, since it is larger than the sum of its proper divisors (78363).

149541 is an equidigital number, since it uses as much as digits as its factorization.

149541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131.

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

The square root of 149541 is about 386.7053141605. The cubic root of 149541 is about 53.0786774984.

Subtracting from 149541 its reverse (145941), we obtain a square (3600 = 60²).

The spelling of 149541 in words is "one hundred forty-nine thousand, five hundred forty-one".