140342441 has 4 divisors (see below), whose sum is σ = 140367300. Its totient is φ = 140317584.

The previous prime is 140342437. The next prime is 140342479. The reversal of 140342441 is 144243041.

It is a happy number.

140342441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64722025 + 75620416 = 8045^2 + 8696^2 .

It is a cyclic number.

It is not a de Polignac number, because 140342441 - 2² = 140342437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140342401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575 + ... + 16763.

It is an arithmetic number, because the mean of its divisors is an integer number (35091825).

Almost surely, 2^140342441 is an apocalyptic number.

It is an amenable number.

140342441 is a deficient number, since it is larger than the sum of its proper divisors (24859).

140342441 is an equidigital number, since it uses as much as digits as its factorization.

140342441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24858.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 140342441 is about 11846.6215015084. The cubic root of 140342441 is about 519.6724280595.

Adding to 140342441 its reverse (144243041), we get a palindrome (284585482).

The spelling of 140342441 in words is "one hundred forty million, three hundred forty-two thousand, four hundred forty-one".