140207505 has 16 divisors (see below), whose sum is σ = 224800704. Its totient is φ = 74621120.

The previous prime is 140207497. The next prime is 140207519. The reversal of 140207505 is 505702041.

It is not a de Polignac number, because 140207505 - 2³ = 140207497 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 15 ways as a sum of consecutive naturals, for example, 2154 + ... + 16883.

It is an arithmetic number, because the mean of its divisors is an integer number (14050044).

Almost surely, 2^140207505 is an apocalyptic number.

140207505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140207505 is a deficient number, since it is larger than the sum of its proper divisors (84593199).

140207505 is a wasteful number, since it uses less digits than its factorization.

140207505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19536.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 140207505 is about 11840.9250060964. The cubic root of 140207505 is about 519.5058236596.

Adding to 140207505 its reverse (505702041), we get a palindrome (645909546).

The spelling of 140207505 in words is "one hundred forty million, two hundred seven thousand, five hundred five".