140355905 has 8 divisors (see below), whose sum is σ = 170456832. Its totient is φ = 110931568.

The previous prime is 140355841. The next prime is 140355923. The reversal of 140355905 is 509553041.

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

It is a cyclic number.

It is not a de Polignac number, because 140355905 - 2⁶ = 140355841 is a prime.

It is a Duffinian number.

It is a Curzon 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, 168689 + ... + 169518.

It is an arithmetic number, because the mean of its divisors is an integer number (21307104).

Almost surely, 2^140355905 is an apocalyptic number.

It is an amenable number.

140355905 is a deficient number, since it is larger than the sum of its proper divisors (30100927).

140355905 is an equidigital number, since it uses as much as digits as its factorization.

140355905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338295.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 140355905 is about 11847.1897511604. The cubic root of 140355905 is about 519.6890460922.

The spelling of 140355905 in words is "one hundred forty million, three hundred fifty-five thousand, nine hundred five".