140985643 has 8 divisors (see below), whose sum is σ = 148592720. Its totient is φ = 133397280.

The previous prime is 140985631. The next prime is 140985667. The reversal of 140985643 is 346589041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140985643 - 2¹³ = 140977451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140985596 and 140985605.

It is not an unprimeable number, because it can be changed into a prime (140985673) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12433 + ... + 20893.

It is an arithmetic number, because the mean of its divisors is an integer number (18574090).

Almost surely, 2^140985643 is an apocalyptic number.

140985643 is a deficient number, since it is larger than the sum of its proper divisors (7607077).

140985643 is an equidigital number, since it uses as much as digits as its factorization.

140985643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9357.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 140985643 is about 11873.7375328917. The cubic root of 140985643 is about 520.4651200865.

The spelling of 140985643 in words is "one hundred forty million, nine hundred eighty-five thousand, six hundred forty-three".