40243412 has 24 divisors (see below), whose sum is σ = 77075712. Its totient is φ = 18233600.

The previous prime is 40243393. The next prime is 40243417. The reversal of 40243412 is 21434204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243417) 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, 14237 + ... + 16827.

It is an arithmetic number, because the mean of its divisors is an integer number (3211488).

Almost surely, 2^40243412 is an apocalyptic number.

It is an amenable number.

40243412 is a deficient number, since it is larger than the sum of its proper divisors (36832300).

40243412 is a wasteful number, since it uses less digits than its factorization.

40243412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959 (or 2957 counting only the distinct ones).

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

The square root of 40243412 is about 6343.7695418418. The cubic root of 40243412 is about 342.6875013617.

Adding to 40243412 its reverse (21434204), we get a palindrome (61677616).

The spelling of 40243412 in words is "forty million, two hundred forty-three thousand, four hundred twelve".