400424222242 has 8 divisors (see below), whose sum is σ = 655239636432. Its totient is φ = 182011010100.

The previous prime is 400424222203. The next prime is 400424222269. The reversal of 400424222242 is 242222424004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×400424222242² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400424222242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9100550484 + ... + 9100550527.

It is an arithmetic number, because the mean of its divisors is an integer number (81904954554).

Almost surely, 2^400424222242 is an apocalyptic number.

400424222242 is a deficient number, since it is larger than the sum of its proper divisors (254815414190).

400424222242 is a wasteful number, since it uses less digits than its factorization.

400424222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18201101024.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 400424222242 its reverse (242222424004), we get a palindrome (642646646246).

The spelling of 400424222242 in words is "four hundred billion, four hundred twenty-four million, two hundred twenty-two thousand, two hundred forty-two".