140421223 has 4 divisors (see below), whose sum is σ = 140955408. Its totient is φ = 139887040.

The previous prime is 140421217. The next prime is 140421283. The reversal of 140421223 is 322124041.

140421223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140421223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140421223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140421283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266698 + ... + 267223.

It is an arithmetic number, because the mean of its divisors is an integer number (35238852).

Almost surely, 2^140421223 is an apocalyptic number.

140421223 is a deficient number, since it is larger than the sum of its proper divisors (534185).

140421223 is an equidigital number, since it uses as much as digits as its factorization.

140421223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534184.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140421223 is about 11849.9461180210. The cubic root of 140421223 is about 519.7696501936.

Adding to 140421223 its reverse (322124041), we get a palindrome (462545264).

The spelling of 140421223 in words is "one hundred forty million, four hundred twenty-one thousand, two hundred twenty-three".