140221807 has 4 divisors (see below), whose sum is σ = 152969256. Its totient is φ = 127474360.

The previous prime is 140221801. The next prime is 140221841. The reversal of 140221807 is 708122041.

It is a happy number.

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 140221807 - 2¹¹ = 140219759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140221801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6373708 + ... + 6373729.

It is an arithmetic number, because the mean of its divisors is an integer number (38242314).

Almost surely, 2^140221807 is an apocalyptic number.

140221807 is a deficient number, since it is larger than the sum of its proper divisors (12747449).

140221807 is a wasteful number, since it uses less digits than its factorization.

140221807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12747448.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 140221807 is about 11841.5289131092. The cubic root of 140221807 is about 519.5234872877.

Adding to 140221807 its reverse (708122041), we get a palindrome (848343848).

The spelling of 140221807 in words is "one hundred forty million, two hundred twenty-one thousand, eight hundred seven".