422043438 has 32 divisors (see below), whose sum is σ = 884275200. Its totient is φ = 134106336.

The previous prime is 422043431. The next prime is 422043451. The reversal of 422043438 is 834340224.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422043431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1606 + ... + 29097.

It is an arithmetic number, because the mean of its divisors is an integer number (27633600).

Almost surely, 2^422043438 is an apocalyptic number.

422043438 is an abundant number, since it is smaller than the sum of its proper divisors (462231762).

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

422043438 is a wasteful number, since it uses less digits than its factorization.

422043438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30816.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 422043438 is about 20543.6958213463. The cubic root of 422043438 is about 750.0998018300.

The spelling of 422043438 in words is "four hundred twenty-two million, forty-three thousand, four hundred thirty-eight".