140405345 has 8 divisors (see below), whose sum is σ = 177354240. Its totient is φ = 106412400.

The previous prime is 140405333. The next prime is 140405351. The reversal of 140405345 is 543504041.

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

It is not a de Polignac number, because 140405345 - 2²² = 136211041 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 738881 + ... + 739070.

It is an arithmetic number, because the mean of its divisors is an integer number (22169280).

Almost surely, 2^140405345 is an apocalyptic number.

It is an amenable number.

140405345 is a deficient number, since it is larger than the sum of its proper divisors (36948895).

140405345 is a wasteful number, since it uses less digits than its factorization.

140405345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477975.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140405345 is about 11849.2761382289. The cubic root of 140405345 is about 519.7500586308.

Adding to 140405345 its reverse (543504041), we get a palindrome (683909386).

The spelling of 140405345 in words is "one hundred forty million, four hundred five thousand, three hundred forty-five".