42040396 has 24 divisors (see below), whose sum is σ = 74844000. Its totient is φ = 20659584.

The previous prime is 42040387. The next prime is 42040409. The reversal of 42040396 is 69304024.

It is an unprimeable number.

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, 95545 + ... + 95983.

It is an arithmetic number, because the mean of its divisors is an integer number (3118500).

Almost surely, 2^42040396 is an apocalyptic number.

It is an amenable number.

42040396 is a deficient number, since it is larger than the sum of its proper divisors (32803604).

42040396 is a wasteful number, since it uses less digits than its factorization.

42040396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 42040396 is about 6483.8565684321. The cubic root of 42040396 is about 347.7140712966.

It can be divided in two parts, 42040 and 396, that added together give a square (42436 = 206²).

The spelling of 42040396 in words is "forty-two million, forty thousand, three hundred ninety-six".