140749005 has 16 divisors (see below), whose sum is σ = 226845504. Its totient is φ = 74517120.

The previous prime is 140748997. The next prime is 140749031. The reversal of 140749005 is 500947041.

It is a happy number.

It is not a de Polignac number, because 140749005 - 2³ = 140748997 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 32191 + ... + 36300.

It is an arithmetic number, because the mean of its divisors is an integer number (14177844).

Almost surely, 2^140749005 is an apocalyptic number.

140749005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140749005 is a deficient number, since it is larger than the sum of its proper divisors (86096499).

140749005 is a wasteful number, since it uses less digits than its factorization.

140749005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68636.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 140749005 is about 11863.7685833802. The cubic root of 140749005 is about 520.1737646596.

The spelling of 140749005 in words is "one hundred forty million, seven hundred forty-nine thousand, five".