140240983 has 4 divisors (see below), whose sum is σ = 142334200. Its totient is φ = 138147768.

The previous prime is 140240981. The next prime is 140240987. The reversal of 140240983 is 389042041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389042041 = 1217 ⋅319673.

It is a cyclic number.

It is not a de Polignac number, because 140240983 - 2¹ = 140240981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140240981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046508 + ... + 1046641.

It is an arithmetic number, because the mean of its divisors is an integer number (35583550).

Almost surely, 2^140240983 is an apocalyptic number.

140240983 is a deficient number, since it is larger than the sum of its proper divisors (2093217).

140240983 is an equidigital number, since it uses as much as digits as its factorization.

140240983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093216.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 140240983 is about 11842.3385781694. The cubic root of 140240983 is about 519.5471686454.

The spelling of 140240983 in words is "one hundred forty million, two hundred forty thousand, nine hundred eighty-three".