400220404242 has 16 divisors (see below), whose sum is σ = 811714623552. Its totient is φ = 131527832240.

The previous prime is 400220404229. The next prime is 400220404267. The reversal of 400220404242 is 242404022004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469741833 + ... + 469742684.

It is an arithmetic number, because the mean of its divisors is an integer number (50732163972).

Almost surely, 2^400220404242 is an apocalyptic number.

400220404242 is an abundant number, since it is smaller than the sum of its proper divisors (411494219310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400220404242 is a wasteful number, since it uses less digits than its factorization.

400220404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939484593.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 400220404242 its reverse (242404022004), we get a palindrome (642624426246).

The spelling of 400220404242 in words is "four hundred billion, two hundred twenty million, four hundred four thousand, two hundred forty-two".