140145904 has 20 divisors (see below), whose sum is σ = 271730376. Its totient is φ = 70021952.

The previous prime is 140145871. The next prime is 140145917. The reversal of 140145904 is 409541041.

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 3 ways as a sum of consecutive naturals, for example, 29862 + ... + 34234.

Almost surely, 2^140145904 is an apocalyptic number.

It is an amenable number.

140145904 is a deficient number, since it is larger than the sum of its proper divisors (131584472).

140145904 is a wasteful number, since it uses less digits than its factorization.

140145904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384 (or 6378 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 140145904 is about 11838.3235299598. The cubic root of 140145904 is about 519.4297298581.

Adding to 140145904 its reverse (409541041), we get a palindrome (549686945).

The spelling of 140145904 in words is "one hundred forty million, one hundred forty-five thousand, nine hundred four".