149509141 has 4 divisors (see below), whose sum is σ = 150041484. Its totient is φ = 148976800.

The previous prime is 149509117. The next prime is 149509153. The reversal of 149509141 is 141905941.

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 76475025 + 73034116 = 8745^2 + 8546^2 .

It is a cyclic number.

It is not a de Polignac number, because 149509141 - 2²⁷ = 15291413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149509097 and 149509106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149509111) 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, 265750 + ... + 266311.

It is an arithmetic number, because the mean of its divisors is an integer number (37510371).

Almost surely, 2^149509141 is an apocalyptic number.

It is an amenable number.

149509141 is a deficient number, since it is larger than the sum of its proper divisors (532343).

149509141 is an equidigital number, since it uses as much as digits as its factorization.

149509141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532342.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 149509141 is about 12227.3930582115. The cubic root of 149509141 is about 530.7490784398.

The spelling of 149509141 in words is "one hundred forty-nine million, five hundred nine thousand, one hundred forty-one".