140538845 has 4 divisors (see below), whose sum is σ = 168646620. Its totient is φ = 112431072.

The previous prime is 140538821. The next prime is 140538851. The reversal of 140538845 is 548835041.

140538845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61293241 + 79245604 = 7829^2 + 8902^2 .

It is a cyclic number.

It is not a de Polignac number, because 140538845 - 2¹⁶ = 140473309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140538799 and 140538808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14053880 + ... + 14053889.

It is an arithmetic number, because the mean of its divisors is an integer number (42161655).

Almost surely, 2^140538845 is an apocalyptic number.

It is an amenable number.

140538845 is a deficient number, since it is larger than the sum of its proper divisors (28107775).

140538845 is an equidigital number, since it uses as much as digits as its factorization.

140538845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28107774.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 140538845 is about 11854.9080553162. The cubic root of 140538845 is about 519.9147357735.

The spelling of 140538845 in words is "one hundred forty million, five hundred thirty-eight thousand, eight hundred forty-five".