40012442 has 16 divisors (see below), whose sum is σ = 63892800. Its totient is φ = 18738720.

The previous prime is 40012417. The next prime is 40012447. The reversal of 40012442 is 24421004.

It is a self number, because there is not a number n which added to its sum of digits gives 40012442.

It is not an unprimeable number, because it can be changed into a prime (40012447) 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, 2534 + ... + 9297.

It is an arithmetic number, because the mean of its divisors is an integer number (3993300).

Almost surely, 2^40012442 is an apocalyptic number.

40012442 is a deficient number, since it is larger than the sum of its proper divisors (23880358).

40012442 is a wasteful number, since it uses less digits than its factorization.

40012442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11941.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40012442 is about 6325.5388703256. The cubic root of 40012442 is about 342.0306448607.

Adding to 40012442 its reverse (24421004), we get a palindrome (64433446).

The spelling of 40012442 in words is "forty million, twelve thousand, four hundred forty-two".