140334221 has 8 divisors (see below), whose sum is σ = 144243000. Its totient is φ = 136477440.

The previous prime is 140334217. The next prime is 140334253. The reversal of 140334221 is 122433041.

It can be written as a sum of positive squares in 4 ways, for example, as 22372900 + 117961321 = 4730^2 + 10861^2 .

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 140334221 - 2² = 140334217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140334193 and 140334202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140334211) 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, 7496 + ... + 18353.

It is an arithmetic number, because the mean of its divisors is an integer number (18030375).

Almost surely, 2^140334221 is an apocalyptic number.

It is an amenable number.

140334221 is a deficient number, since it is larger than the sum of its proper divisors (3908779).

140334221 is an equidigital number, since it uses as much as digits as its factorization.

140334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25999.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 140334221 is about 11846.2745620722. The cubic root of 140334221 is about 519.6622819466.

Adding to 140334221 its reverse (122433041), we get a palindrome (262767262).

The spelling of 140334221 in words is "one hundred forty million, three hundred thirty-four thousand, two hundred twenty-one".