139810 has 32 divisors (see below), whose sum is σ = 290304. Its totient is φ = 48000.

The previous prime is 139801. The next prime is 139813. The reversal of 139810 is 18931.

139810 is nontrivially palindromic in base 4 and base 16.

It is a super-2 number, since 2×139810² = 39093672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an Ulam number.

139810 is an undulating number in base 4.

139810 is a nontrivial repdigit in base 16.

It is a plaindrome in base 12 and base 16.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (139813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390 + ... + 3430.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2¹³⁹⁸¹⁰ is an apocalyptic number.

139810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139810 is an abundant number, since it is smaller than the sum of its proper divisors (150494).

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

139810 is a wasteful number, since it uses less digits than its factorization.

139810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 139810 is about 373.9117542950. The cubic root of 139810 is about 51.9014405299.

It can be divided in two parts, 139 and 810, that added together give a palindrome (949).

The spelling of 139810 in words is "one hundred thirty-nine thousand, eight hundred ten".