140645945 has 8 divisors (see below), whose sum is σ = 184118400. Its totient is φ = 102287920.

The previous prime is 140645909. The next prime is 140645951. The reversal of 140645945 is 549546041.

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

It is not a de Polignac number, because 140645945 - 2⁶ = 140645881 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140645899 and 140645908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278545 + ... + 1278654.

It is an arithmetic number, because the mean of its divisors is an integer number (23014800).

Almost surely, 2^140645945 is an apocalyptic number.

It is an amenable number.

140645945 is a deficient number, since it is larger than the sum of its proper divisors (43472455).

140645945 is a wasteful number, since it uses less digits than its factorization.

140645945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557215.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 140645945 is about 11859.4243114917. The cubic root of 140645945 is about 520.0467721736.

The spelling of 140645945 in words is "one hundred forty million, six hundred forty-five thousand, nine hundred forty-five".