139026 has 32 divisors (see below), whose sum is σ = 311040. Its totient is φ = 41216.

The previous prime is 139021. The next prime is 139033. The reversal of 139026 is 620931.

139026 is nontrivially palindromic in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 138993 and 139011.

It is not an unprimeable number, because it can be changed into a prime (139021) by changing a digit.

139026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2935 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2¹³⁹⁰²⁶ is an apocalyptic number.

139026 is an abundant number, since it is smaller than the sum of its proper divisors (172014).

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

139026 is a wasteful number, since it uses less digits than its factorization.

139026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 139026 is about 372.8619047315. The cubic root of 139026 is about 51.8042442719.

Adding to 139026 its reverse (620931), we get a palindrome (759957).

The spelling of 139026 in words is "one hundred thirty-nine thousand, twenty-six".