400024042 has 16 divisors (see below), whose sum is σ = 693090432. Its totient is φ = 171133120.

The previous prime is 400024039. The next prime is 400024049. The reversal of 400024042 is 240420004.

It is not an unprimeable number, because it can be changed into a prime (400024049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534418 + ... + 535165.

It is an arithmetic number, because the mean of its divisors is an integer number (43318152).

Almost surely, 2^400024042 is an apocalyptic number.

400024042 is a deficient number, since it is larger than the sum of its proper divisors (293066390).

400024042 is a wasteful number, since it uses less digits than its factorization.

400024042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069613.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 400024042 is about 20000.6010409687. The cubic root of 400024042 is about 736.8210613465.

Adding to 400024042 its reverse (240420004), we get a palindrome (640444046).

It can be divided in two parts, 40002 and 4042, that added together give a palindrome (44044).

The spelling of 400024042 in words is "four hundred million, twenty-four thousand, forty-two".