140629 has 2 divisors, whose sum is σ = 140630. Its totient is φ = 140628.

The previous prime is 140627. The next prime is 140639. The reversal of 140629 is 926041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 4 = 375^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 140629 - 2¹ = 140627 is a prime.

Together with 140627, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 7 and base 16.

It is a zygodrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70314 + 70315.

It is an arithmetic number, because the mean of its divisors is an integer number (70315).

140629 is a Friedman number, since it can be written as 4+9*(10/2)^6, using all its digits and the basic arithmetic operations.

2¹⁴⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

140629 is a deficient number, since it is larger than the sum of its proper divisors (1).

140629 is an equidigital number, since it uses as much as digits as its factorization.

140629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 140629 is about 375.0053332954. The cubic root of 140629 is about 52.0025886285.

The spelling of 140629 in words is "one hundred forty thousand, six hundred twenty-nine".