140145515 has 16 divisors (see below), whose sum is σ = 171849600. Its totient is φ = 109679232.

The previous prime is 140145491. The next prime is 140145527. The reversal of 140145515 is 515541041.

It is a cyclic number.

It is not a de Polignac number, because 140145515 - 2⁸ = 140145259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134366 + ... + 135404.

It is an arithmetic number, because the mean of its divisors is an integer number (10740600).

Almost surely, 2^140145515 is an apocalyptic number.

140145515 is a deficient number, since it is larger than the sum of its proper divisors (31704085).

140145515 is a wasteful number, since it uses less digits than its factorization.

140145515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 140145515 is about 11838.3071002572. The cubic root of 140145515 is about 519.4292492677.

Adding to 140145515 its reverse (515541041), we get a palindrome (655686556).

The spelling of 140145515 in words is "one hundred forty million, one hundred forty-five thousand, five hundred fifteen".