140429 has 6 divisors (see below), whose sum is σ = 148590. Its totient is φ = 132696.

The previous prime is 140423. The next prime is 140443. The reversal of 140429 is 924041.

It can be written as a sum of positive squares in only one way, i.e., 104329 + 36100 = 323^2 + 190^2 .

It is not a de Polignac number, because 140429 - 2¹² = 136333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 140429.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140429.

It is not an unprimeable number, because it can be changed into a prime (140423) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 167 + ... + 555.

It is an arithmetic number, because the mean of its divisors is an integer number (24765).

2¹⁴⁰⁴²⁹ is an apocalyptic number.

140429 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

140429 is a deficient number, since it is larger than the sum of its proper divisors (8161).

140429 is an equidigital number, since it uses as much as digits as its factorization.

140429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 140429 is about 374.7385755430. The cubic root of 140429 is about 51.9779245547.

The spelling of 140429 in words is "one hundred forty thousand, four hundred twenty-nine".