422840426 has 8 divisors (see below), whose sum is σ = 635917824. Its totient is φ = 210867820.

The previous prime is 422840389. The next prime is 422840447. The reversal of 422840426 is 624048224.

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

It is a super-2 number, since 2×422840426² = 357588051719722952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 422840392 and 422840401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275240 + ... + 276771.

It is an arithmetic number, because the mean of its divisors is an integer number (79489728).

Almost surely, 2^422840426 is an apocalyptic number.

422840426 is a deficient number, since it is larger than the sum of its proper divisors (213077398).

422840426 is a wasteful number, since it uses less digits than its factorization.

422840426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552396.

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 422840426 is about 20563.0840585745. The cubic root of 422840426 is about 750.5716684458.

The spelling of 422840426 in words is "four hundred twenty-two million, eight hundred forty thousand, four hundred twenty-six".