422721734 has 8 divisors (see below), whose sum is σ = 648828840. Its totient is φ = 206445456.

The previous prime is 422721731. The next prime is 422721743. The reversal of 422721734 is 437127224.

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

It is a self number, because there is not a number n which added to its sum of digits gives 422721734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422721731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2457599 + ... + 2457770.

It is an arithmetic number, because the mean of its divisors is an integer number (81103605).

Almost surely, 2^422721734 is an apocalyptic number.

422721734 is a deficient number, since it is larger than the sum of its proper divisors (226107106).

422721734 is a wasteful number, since it uses less digits than its factorization.

422721734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915414.

The product of its digits is 18816, while the sum is 32.

The square root of 422721734 is about 20560.1978103325. The cubic root of 422721734 is about 750.5014329749.

Adding to 422721734 its reverse (437127224), we get a palindrome (859848958).

The spelling of 422721734 in words is "four hundred twenty-two million, seven hundred twenty-one thousand, seven hundred thirty-four".