140067221 has 16 divisors (see below), whose sum is σ = 170409600. Its totient is φ = 112451328.

The previous prime is 140067143. The next prime is 140067227. The reversal of 140067221 is 122760041.

It is a cyclic number.

It is not a de Polignac number, because 140067221 - 2²⁶ = 72958357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140067227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5921 + ... + 17753.

It is an arithmetic number, because the mean of its divisors is an integer number (10650600).

Almost surely, 2^140067221 is an apocalyptic number.

It is an amenable number.

140067221 is a deficient number, since it is larger than the sum of its proper divisors (30342379).

140067221 is a wasteful number, since it uses less digits than its factorization.

140067221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11948.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 140067221 is about 11834.9998310097. Note that the first 3 decimals coincide. The cubic root of 140067221 is about 519.3325027557.

The spelling of 140067221 in words is "one hundred forty million, sixty-seven thousand, two hundred twenty-one".