140023441 has 4 divisors (see below), whose sum is σ = 148260132. Its totient is φ = 131786752.

The previous prime is 140023427. The next prime is 140023459. The reversal of 140023441 is 144320041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79121025 + 60902416 = 8895^2 + 7804^2 .

It is a cyclic number.

It is not a de Polignac number, because 140023441 - 2⁵ = 140023409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140023421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118320 + ... + 4118353.

It is an arithmetic number, because the mean of its divisors is an integer number (37065033).

Almost surely, 2^140023441 is an apocalyptic number.

It is an amenable number.

140023441 is a deficient number, since it is larger than the sum of its proper divisors (8236691).

140023441 is an equidigital number, since it uses as much as digits as its factorization.

140023441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236690.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140023441 is about 11833.1500877830. The cubic root of 140023441 is about 519.2783888664.

Adding to 140023441 its reverse (144320041), we get a palindrome (284343482).

The spelling of 140023441 in words is "one hundred forty million, twenty-three thousand, four hundred forty-one".