40140223 has 4 divisors (see below), whose sum is σ = 40320448. Its totient is φ = 39960000.

The previous prime is 40140203. The next prime is 40140229. The reversal of 40140223 is 32204104.

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 40140223 - 2⁹ = 40139711 is a prime.

It is a super-2 number, since 2×40140223² = 3222475004979458, 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 = 40140197 and 40140206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140229) 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, 89778 + ... + 90223.

It is an arithmetic number, because the mean of its divisors is an integer number (10080112).

Almost surely, 2^40140223 is an apocalyptic number.

40140223 is a deficient number, since it is larger than the sum of its proper divisors (180225).

40140223 is a wasteful number, since it uses less digits than its factorization.

40140223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180224.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40140223 is about 6335.6312234852. The cubic root of 40140223 is about 342.3943531937.

Adding to 40140223 its reverse (32204104), we get a palindrome (72344327).

The spelling of 40140223 in words is "forty million, one hundred forty thousand, two hundred twenty-three".