140909105 has 8 divisors (see below), whose sum is σ = 174545664. Its totient is φ = 109090800.

The previous prime is 140909101. The next prime is 140909113. The reversal of 140909105 is 501909041.

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

It is not a de Polignac number, because 140909105 - 2² = 140909101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140909101) by changing a digit.

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, 454391 + ... + 454700.

It is an arithmetic number, because the mean of its divisors is an integer number (21818208).

Almost surely, 2^140909105 is an apocalyptic number.

It is an amenable number.

140909105 is a deficient number, since it is larger than the sum of its proper divisors (33636559).

140909105 is an equidigital number, since it uses as much as digits as its factorization.

140909105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909127.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 140909105 is about 11870.5141000717. The cubic root of 140909105 is about 520.3709200217.

The spelling of 140909105 in words is "one hundred forty million, nine hundred nine thousand, one hundred five".