140442017 has 4 divisors (see below), whose sum is σ = 140465796. Its totient is φ = 140418240.

The previous prime is 140441989. The next prime is 140442037. The reversal of 140442017 is 710244041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 106523041 + 33918976 = 10321^2 + 5824^2 .

It is a cyclic number.

It is not a de Polignac number, because 140442017 - 2⁶ = 140441953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140441983 and 140442001.

It is not an unprimeable number, because it can be changed into a prime (140442037) 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, 4517 + ... + 17357.

It is an arithmetic number, because the mean of its divisors is an integer number (35116449).

Almost surely, 2^140442017 is an apocalyptic number.

It is an amenable number.

140442017 is a deficient number, since it is larger than the sum of its proper divisors (23779).

140442017 is a wasteful number, since it uses less digits than its factorization.

140442017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23778.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 140442017 is about 11850.8234734975. The cubic root of 140442017 is about 519.7953052819.

Adding to 140442017 its reverse (710244041), we get a palindrome (850686058).

It can be divided in two parts, 14044 and 2017, that added together give a palindrome (16061).

The spelling of 140442017 in words is "one hundred forty million, four hundred forty-two thousand, seventeen".