149139 has 12 divisors (see below), whose sum is σ = 219336. Its totient is φ = 97632.

The previous prime is 149119. The next prime is 149143. The reversal of 149139 is 931941.

It is not a de Polignac number, because 149139 - 2⁷ = 149011 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (149119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 544 + ... + 770.

It is an arithmetic number, because the mean of its divisors is an integer number (18278).

2¹⁴⁹¹³⁹ is an apocalyptic number.

149139 is a deficient number, since it is larger than the sum of its proper divisors (70197).

149139 is a wasteful number, since it uses less digits than its factorization.

149139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 303 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 149139 is about 386.1851887372. The cubic root of 149139 is about 53.0310723220.

The spelling of 149139 in words is "one hundred forty-nine thousand, one hundred thirty-nine".