400421403422 has 8 divisors (see below), whose sum is σ = 610478533272. Its totient is φ = 196928559000.

The previous prime is 400421403409. The next prime is 400421403427. The reversal of 400421403422 is 224304124004.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 400421403391 and 400421403400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400421403427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641071204 + ... + 1641071447.

It is an arithmetic number, because the mean of its divisors is an integer number (76309816659).

Almost surely, 2^400421403422 is an apocalyptic number.

400421403422 is a deficient number, since it is larger than the sum of its proper divisors (210057129850).

400421403422 is a wasteful number, since it uses less digits than its factorization.

400421403422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282142714.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 400421403422 its reverse (224304124004), we get a palindrome (624725527426).

The spelling of 400421403422 in words is "four hundred billion, four hundred twenty-one million, four hundred three thousand, four hundred twenty-two".