422840738 has 4 divisors (see below), whose sum is σ = 634261110. Its totient is φ = 211420368.

The previous prime is 422840729. The next prime is 422840741. The reversal of 422840738 is 837048224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 345699649 + 77141089 = 18593^2 + 8783^2 .

It is a Curzon number.

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 as a sum of consecutive naturals, namely, 105710183 + ... + 105710186.

Almost surely, 2^422840738 is an apocalyptic number.

422840738 is a deficient number, since it is larger than the sum of its proper divisors (211420372).

422840738 is a wasteful number, since it uses less digits than its factorization.

422840738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211420371.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 422840738 is about 20563.0916449837. The cubic root of 422840738 is about 750.5718530531.

The spelling of 422840738 in words is "four hundred twenty-two million, eight hundred forty thousand, seven hundred thirty-eight".