140205445 has 12 divisors (see below), whose sum is σ = 172558764. Its totient is φ = 109296320.

The previous prime is 140205433. The next prime is 140205451. The reversal of 140205445 is 544502041.

It is a happy number.

140205445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 24621444 + 115584001 = 4962^2 + 10751^2 .

It is not a de Polignac number, because 140205445 - 2¹⁵ = 140172677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169122 + ... + 169948.

It is an arithmetic number, because the mean of its divisors is an integer number (14379897).

Almost surely, 2^140205445 is an apocalyptic number.

It is an amenable number.

140205445 is a deficient number, since it is larger than the sum of its proper divisors (32353319).

140205445 is an frugal number, since it uses more digits than its factorization.

140205445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 140205445 is about 11840.8380193295. The cubic root of 140205445 is about 519.5032793659.

Adding to 140205445 its reverse (544502041), we get a palindrome (684707486).

The spelling of 140205445 in words is "one hundred forty million, two hundred five thousand, four hundred forty-five".