140353945 has 16 divisors (see below), whose sum is σ = 171751680. Its totient is φ = 110081664.

The previous prime is 140353909. The next prime is 140353949. The reversal of 140353945 is 549353041.

It is a cyclic number.

It is not a de Polignac number, because 140353945 - 2¹⁵ = 140321177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140353945.

It is not an unprimeable number, because it can be changed into a prime (140353949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79189 + ... + 80941.

It is an arithmetic number, because the mean of its divisors is an integer number (10734480).

Almost surely, 2^140353945 is an apocalyptic number.

It is an amenable number.

140353945 is a deficient number, since it is larger than the sum of its proper divisors (31397735).

140353945 is a wasteful number, since it uses less digits than its factorization.

140353945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 140353945 is about 11847.1070308325. The cubic root of 140353945 is about 519.6866270151.

The spelling of 140353945 in words is "one hundred forty million, three hundred fifty-three thousand, nine hundred forty-five".