140626 has 4 divisors (see below), whose sum is σ = 210942. Its totient is φ = 70312.

The previous prime is 140617. The next prime is 140627. The reversal of 140626 is 626041.

It is a Cunningham number, because it is equal to 375²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 626041 = 13 ⋅48157.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 1 = 375^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (140627) by changing a digit.

140626 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 35155 + ... + 35158.

2¹⁴⁰⁶²⁶ is an apocalyptic number.

140626 is a deficient number, since it is larger than the sum of its proper divisors (70316).

140626 is an equidigital number, since it uses as much as digits as its factorization.

140626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70315.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 140626 is about 375.0013333310. The cubic root of 140626 is about 52.0022188402.

Adding to 140626 its reverse (626041), we get a palindrome (766667).

The spelling of 140626 in words is "one hundred forty thousand, six hundred twenty-six".