40424223 has 8 divisors (see below), whose sum is σ = 61598848. Its totient is φ = 23099544.

The previous prime is 40424207. The next prime is 40424233. The reversal of 40424223 is 32242404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40424223 - 2⁴ = 40424207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1924963 = 40424223 / (4 + 0 + 4 + 2 + 4 + 2 + 2 + 3).

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 40424223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40424233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962461 + ... + 962502.

It is an arithmetic number, because the mean of its divisors is an integer number (7699856).

Almost surely, 2^40424223 is an apocalyptic number.

40424223 is a deficient number, since it is larger than the sum of its proper divisors (21174625).

40424223 is a wasteful number, since it uses less digits than its factorization.

40424223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924973.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40424223 is about 6358.0046398222. The cubic root of 40424223 is about 343.1999587728.

Adding to 40424223 its reverse (32242404), we get a palindrome (72666627).

The spelling of 40424223 in words is "forty million, four hundred twenty-four thousand, two hundred twenty-three".