140242223 has 4 divisors (see below), whose sum is σ = 152991528. Its totient is φ = 127492920.

The previous prime is 140242217. The next prime is 140242241. The reversal of 140242223 is 322242041.

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 140242223 - 2⁶ = 140242159 is a prime.

It is a super-2 number, since 2×140242223² = 39335762223963458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140242195 and 140242204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140242283) 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, 6374636 + ... + 6374657.

It is an arithmetic number, because the mean of its divisors is an integer number (38247882).

Almost surely, 2^140242223 is an apocalyptic number.

140242223 is a deficient number, since it is larger than the sum of its proper divisors (12749305).

140242223 is a wasteful number, since it uses less digits than its factorization.

140242223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12749304.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140242223 is about 11842.3909325778. The cubic root of 140242223 is about 519.5486999062.

Adding to 140242223 its reverse (322242041), we get a palindrome (462484264).

The spelling of 140242223 in words is "one hundred forty million, two hundred forty-two thousand, two hundred twenty-three".