140220811 has 16 divisors (see below), whose sum is σ = 157137408. Its totient is φ = 124432000.

The previous prime is 140220803. The next prime is 140220833. The reversal of 140220811 is 118022041.

It is a happy number.

140220811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 140220811 - 2³ = 140220803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140220511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25236 + ... + 30286.

It is an arithmetic number, because the mean of its divisors is an integer number (9821088).

Almost surely, 2^140220811 is an apocalyptic number.

140220811 is a deficient number, since it is larger than the sum of its proper divisors (16916597).

140220811 is a wasteful number, since it uses less digits than its factorization.

140220811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5162.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 140220811 is about 11841.4868576543. The cubic root of 140220811 is about 519.5222572208.

Adding to 140220811 its reverse (118022041), we get a palindrome (258242852).

The spelling of 140220811 in words is "one hundred forty million, two hundred twenty thousand, eight hundred eleven".