400220040242 has 32 divisors (see below), whose sum is σ = 667677017664. Its totient is φ = 178374830400.

The previous prime is 400220040239. The next prime is 400220040263. The reversal of 400220040242 is 242040022004.

It is a super-2 number, since 2×400220040242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1784213 + ... + 1995959.

It is an arithmetic number, because the mean of its divisors is an integer number (20864906802).

Almost surely, 2^400220040242 is an apocalyptic number.

400220040242 is a deficient number, since it is larger than the sum of its proper divisors (267456977422).

400220040242 is a wasteful number, since it uses less digits than its factorization.

400220040242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213434.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 400220040242 its reverse (242040022004), we get a palindrome (642260062246).

The spelling of 400220040242 in words is "four hundred billion, two hundred twenty million, forty thousand, two hundred forty-two".