140145746 has 16 divisors (see below), whose sum is σ = 226595544. Its totient is φ = 64623744.

The previous prime is 140145737. The next prime is 140145757. The reversal of 140145746 is 647541041.

It can be written as a sum of positive squares in 4 ways, for example, as 126000625 + 14145121 = 11225^2 + 3761^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41456 + ... + 44708.

Almost surely, 2^140145746 is an apocalyptic number.

140145746 is a deficient number, since it is larger than the sum of its proper divisors (86449798).

140145746 is a wasteful number, since it uses less digits than its factorization.

140145746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 140145746 is about 11838.3168567157. The cubic root of 140145746 is about 519.4295346570.

Adding to 140145746 its reverse (647541041), we get a palindrome (787686787).

The spelling of 140145746 in words is "one hundred forty million, one hundred forty-five thousand, seven hundred forty-six".