402442143422 has 8 divisors (see below), whose sum is σ = 658541689272. Its totient is φ = 182928247000.

The previous prime is 402442143421. The next prime is 402442143463. The reversal of 402442143422 is 224341244204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402442143421) 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, 9146412329 + ... + 9146412372.

It is an arithmetic number, because the mean of its divisors is an integer number (82317711159).

Almost surely, 2^402442143422 is an apocalyptic number.

402442143422 is a deficient number, since it is larger than the sum of its proper divisors (256099545850).

402442143422 is a wasteful number, since it uses less digits than its factorization.

402442143422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18292824714.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 402442143422 its reverse (224341244204), we get a palindrome (626783387626).

The spelling of 402442143422 in words is "four hundred two billion, four hundred forty-two million, one hundred forty-three thousand, four hundred twenty-two".