140143445 has 8 divisors (see below), whose sum is σ = 181108536. Its totient is φ = 103490496.

The previous prime is 140143403. The next prime is 140143463. The reversal of 140143445 is 544341041.

It is a happy number.

140143445 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 4 ways, for example, as 13490929 + 126652516 = 3673^2 + 11254^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140143445 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077962 + ... + 1078091.

It is an arithmetic number, because the mean of its divisors is an integer number (22638567).

Almost surely, 2^140143445 is an apocalyptic number.

It is an amenable number.

140143445 is a deficient number, since it is larger than the sum of its proper divisors (40965091).

140143445 is a wasteful number, since it uses less digits than its factorization.

140143445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156071.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 140143445 is about 11838.2196718932. The cubic root of 140143445 is about 519.4266918691.

Adding to 140143445 its reverse (544341041), we get a palindrome (684484486).

The spelling of 140143445 in words is "one hundred forty million, one hundred forty-three thousand, four hundred forty-five".