139266 has 16 divisors (see below), whose sum is σ = 309600. Its totient is φ = 46404.

The previous prime is 139241. The next prime is 139267. The reversal of 139266 is 662931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (139267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236 + ... + 1343.

It is an arithmetic number, because the mean of its divisors is an integer number (19350).

2¹³⁹²⁶⁶ is an apocalyptic number.

139266 is an abundant number, since it is smaller than the sum of its proper divisors (170334).

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

139266 is a wasteful number, since it uses less digits than its factorization.

139266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590 (or 2584 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 139266 is about 373.1836009259. The cubic root of 139266 is about 51.8340369513.

The spelling of 139266 in words is "one hundred thirty-nine thousand, two hundred sixty-six".