40012423 has 8 divisors (see below), whose sum is σ = 45947520. Its totient is φ = 34460280.

The previous prime is 40012417. The next prime is 40012447. The reversal of 40012423 is 32421004.

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

It is a cyclic number.

It is not a de Polignac number, because 40012423 - 2¹³ = 40004231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40012397 and 40012406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95515 + ... + 95932.

It is an arithmetic number, because the mean of its divisors is an integer number (5743440).

Almost surely, 2^40012423 is an apocalyptic number.

40012423 is a deficient number, since it is larger than the sum of its proper divisors (5935097).

40012423 is a wasteful number, since it uses less digits than its factorization.

40012423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191477.

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

The square root of 40012423 is about 6325.5373684771. The cubic root of 40012423 is about 342.0305907226.

Adding to 40012423 its reverse (32421004), we get a palindrome (72433427).

The spelling of 40012423 in words is "forty million, twelve thousand, four hundred twenty-three".