149156 has 18 divisors (see below), whose sum is σ = 304038. Its totient is φ = 63840.

The previous prime is 149153. The next prime is 149159. The reversal of 149156 is 651941.

It is an interprime number because it is at equal distance from previous prime (149153) and next prime (149159).

It can be written as a sum of positive squares in only one way, i.e., 78400 + 70756 = 280^2 + 266^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149153) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 185 + ... + 576.

It is an arithmetic number, because the mean of its divisors is an integer number (16891).

2¹⁴⁹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

149156 is an abundant number, since it is smaller than the sum of its proper divisors (154882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149156 is a wasteful number, since it uses less digits than its factorization.

149156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 770 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 149156 is about 386.2071982757. The cubic root of 149156 is about 53.0330872074.

The spelling of 149156 in words is "one hundred forty-nine thousand, one hundred fifty-six".