140045 has 8 divisors (see below), whose sum is σ = 172824. Its totient is φ = 108864.

The previous prime is 140009. The next prime is 140053. The reversal of 140045 is 540041.

It can be written as a sum of positive squares in 4 ways, for example, as 45796 + 94249 = 214^2 + 307^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 140045 - 2⁶ = 139981 is a prime.

It is a super-2 number, since 2×140045² = 39225204050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (21603).

2¹⁴⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

140045 is a deficient number, since it is larger than the sum of its proper divisors (32779).

140045 is an equidigital number, since it uses as much as digits as its factorization.

140045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 140045 is about 374.2258676254. The cubic root of 140045 is about 51.9305038091.

Adding to 140045 its reverse (540041), we get a palindrome (680086).

The spelling of 140045 in words is "one hundred forty thousand, forty-five".