149138 has 8 divisors (see below), whose sum is σ = 244080. Its totient is φ = 67780.

The previous prime is 149119. The next prime is 149143. The reversal of 149138 is 831941.

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

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3368 + ... + 3411.

It is an arithmetic number, because the mean of its divisors is an integer number (30510).

2¹⁴⁹¹³⁸ is an apocalyptic number.

149138 is a deficient number, since it is larger than the sum of its proper divisors (94942).

149138 is a wasteful number, since it uses less digits than its factorization.

149138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792.

The product of its digits is 864, while the sum is 26.

The square root of 149138 is about 386.1838940194. The cubic root of 149138 is about 53.0309537945.

The spelling of 149138 in words is "one hundred forty-nine thousand, one hundred thirty-eight".