140044505 has 4 divisors (see below), whose sum is σ = 168053412. Its totient is φ = 112035600.

The previous prime is 140044483. The next prime is 140044517. The reversal of 140044505 is 505440041.

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 16679056 + 123365449 = 4084^2 + 11107^2 .

It is not a de Polignac number, because 140044505 - 2¹² = 140040409 is a prime.

It is a super-2 number, since 2×140044505² = 39224926761390050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14004446 + ... + 14004455.

It is an arithmetic number, because the mean of its divisors is an integer number (42013353).

Almost surely, 2^140044505 is an apocalyptic number.

It is an amenable number.

140044505 is a deficient number, since it is larger than the sum of its proper divisors (28008907).

140044505 is an equidigital number, since it uses as much as digits as its factorization.

140044505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28008906.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 140044505 is about 11834.0400962647. The cubic root of 140044505 is about 519.3044262486.

Adding to 140044505 its reverse (505440041), we get a palindrome (645484546).

The spelling of 140044505 in words is "one hundred forty million, forty-four thousand, five hundred five".