140204505 has 32 divisors (see below), whose sum is σ = 257753088. Its totient is φ = 63748800.

The previous prime is 140204503. The next prime is 140204509. The reversal of 140204505 is 505402041.

It is not a de Polignac number, because 140204505 - 2¹ = 140204503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (140204501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16560 + ... + 23550.

It is an arithmetic number, because the mean of its divisors is an integer number (8054784).

Almost surely, 2^140204505 is an apocalyptic number.

140204505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140204505 is a deficient number, since it is larger than the sum of its proper divisors (117548583).

140204505 is a wasteful number, since it uses less digits than its factorization.

140204505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7197.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 140204505 is about 11840.7983261265. The cubic root of 140204505 is about 519.5021183692.

Adding to 140204505 its reverse (505402041), we get a palindrome (645606546).

The spelling of 140204505 in words is "one hundred forty million, two hundred four thousand, five hundred five".