140443505 has 8 divisors (see below), whose sum is σ = 168925824. Its totient is φ = 112092400.

The previous prime is 140443489. The next prime is 140443507. The reversal of 140443505 is 505344041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140443505 - 2⁴ = 140443489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140443507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30431 + ... + 34740.

It is an arithmetic number, because the mean of its divisors is an integer number (21115728).

Almost surely, 2^140443505 is an apocalyptic number.

It is an amenable number.

140443505 is a deficient number, since it is larger than the sum of its proper divisors (28482319).

140443505 is an equidigital number, since it uses as much as digits as its factorization.

140443505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65607.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140443505 is about 11850.8862537787. The cubic root of 140443505 is about 519.7971410399.

Adding to 140443505 its reverse (505344041), we get a palindrome (645787546).

The spelling of 140443505 in words is "one hundred forty million, four hundred forty-three thousand, five hundred five".