140230445 has 8 divisors (see below), whose sum is σ = 170582136. Its totient is φ = 110647296.

The previous prime is 140230427. The next prime is 140230459. The reversal of 140230445 is 544032041.

It can be written as a sum of positive squares in 4 ways, for example, as 1249924 + 138980521 = 1118^2 + 11789^2 .

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 140230445 - 2⁶ = 140230381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140230445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191732 + ... + 192461.

It is an arithmetic number, because the mean of its divisors is an integer number (21322767).

Almost surely, 2^140230445 is an apocalyptic number.

It is an amenable number.

140230445 is a deficient number, since it is larger than the sum of its proper divisors (30351691).

140230445 is an equidigital number, since it uses as much as digits as its factorization.

140230445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384271.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140230445 is about 11841.8936407992. The cubic root of 140230445 is about 519.5341550334.

Adding to 140230445 its reverse (544032041), we get a palindrome (684262486).

The spelling of 140230445 in words is "one hundred forty million, two hundred thirty thousand, four hundred forty-five".