40205042 has 16 divisors (see below), whose sum is σ = 61378560. Its totient is φ = 19747872.

The previous prime is 40205041. The next prime is 40205059. The reversal of 40205042 is 24050204.

It is a self number, because there is not a number n which added to its sum of digits gives 40205042.

It is not an unprimeable number, because it can be changed into a prime (40205041) 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, 55559 + ... + 56277.

It is an arithmetic number, because the mean of its divisors is an integer number (3836160).

Almost surely, 2^40205042 is an apocalyptic number.

40205042 is a deficient number, since it is larger than the sum of its proper divisors (21173518).

40205042 is a wasteful number, since it uses less digits than its factorization.

40205042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40205042 is about 6340.7445935000. The cubic root of 40205042 is about 342.5785551605.

Adding to 40205042 its reverse (24050204), we get a palindrome (64255246).

The spelling of 40205042 in words is "forty million, two hundred five thousand, forty-two".