140921683 has 4 divisors (see below), whose sum is σ = 161053360. Its totient is φ = 120790008.

The previous prime is 140921681. The next prime is 140921699. The reversal of 140921683 is 386129041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140921683 - 2¹ = 140921681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140921681) 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 3 ways as a sum of consecutive naturals, for example, 10065828 + ... + 10065841.

It is an arithmetic number, because the mean of its divisors is an integer number (40263340).

Almost surely, 2^140921683 is an apocalyptic number.

140921683 is a deficient number, since it is larger than the sum of its proper divisors (20131677).

140921683 is an equidigital number, since it uses as much as digits as its factorization.

140921683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20131676.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 140921683 is about 11871.0438883866. The cubic root of 140921683 is about 520.3864028884.

The spelling of 140921683 in words is "one hundred forty million, nine hundred twenty-one thousand, six hundred eighty-three".