140145215 has 16 divisors (see below), whose sum is σ = 192391680. Its totient is φ = 96003360.

The previous prime is 140145191. The next prime is 140145217. The reversal of 140145215 is 512541041.

It is not a de Polignac number, because 140145215 - 2⁶ = 140145151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140145217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64700 + ... + 66830.

It is an arithmetic number, because the mean of its divisors is an integer number (12024480).

Almost surely, 2^140145215 is an apocalyptic number.

140145215 is a deficient number, since it is larger than the sum of its proper divisors (52246465).

140145215 is a wasteful number, since it uses less digits than its factorization.

140145215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 140145215 is about 11838.2944295198. The cubic root of 140145215 is about 519.4288786318.

Adding to 140145215 its reverse (512541041), we get a palindrome (652686256).

The spelling of 140145215 in words is "one hundred forty million, one hundred forty-five thousand, two hundred fifteen".