422115100 has 72 divisors (see below), whose sum is σ = 1058088528. Its totient is φ = 144460800.

The previous prime is 422115041. The next prime is 422115103. The reversal of 422115100 is 1511224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422115103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7414 + ... + 29986.

It is an arithmetic number, because the mean of its divisors is an integer number (14695674).

Almost surely, 2^422115100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422115100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529044264).

422115100 is an abundant number, since it is smaller than the sum of its proper divisors (635973428).

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

422115100 is a wasteful number, since it uses less digits than its factorization.

422115100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22615 (or 22608 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 422115100 is about 20545.4398833415. The cubic root of 422115100 is about 750.1422544980.

Adding to 422115100 its reverse (1511224), we get a palindrome (423626324).

It can be divided in two parts, 4221 and 15100, that added together give a square (19321 = 139²).

The spelling of 422115100 in words is "four hundred twenty-two million, one hundred fifteen thousand, one hundred".