140421205 has 8 divisors (see below), whose sum is σ = 168947712. Its totient is φ = 112042128.

The previous prime is 140421199. The next prime is 140421217. The reversal of 140421205 is 502124041.

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 140421205 - 2¹¹ = 140419157 is a prime.

It is a super-2 number, since 2×140421205² = 39436229627304050, which contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 34749 + ... + 38578.

It is an arithmetic number, because the mean of its divisors is an integer number (21118464).

Almost surely, 2^140421205 is an apocalyptic number.

It is an amenable number.

140421205 is a deficient number, since it is larger than the sum of its proper divisors (28526507).

140421205 is an equidigital number, since it uses as much as digits as its factorization.

140421205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73715.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 140421205 is about 11849.9453585238. The cubic root of 140421205 is about 519.7696279845.

Adding to 140421205 its reverse (502124041), we get a palindrome (642545246).

The spelling of 140421205 in words is "one hundred forty million, four hundred twenty-one thousand, two hundred five".