422019612 has 96 divisors (see below), whose sum is σ = 1263037440. Its totient is φ = 119361600.

The previous prime is 422019607. The next prime is 422019613. The reversal of 422019612 is 216910224.

422019612 is a `hidden beast` number, since 42 + 2 + 0 + 1 + 9 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422019613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73593 + ... + 79119.

It is an arithmetic number, because the mean of its divisors is an integer number (13156640).

Almost surely, 2^422019612 is an apocalyptic number.

422019612 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422019612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631518720).

422019612 is an abundant number, since it is smaller than the sum of its proper divisors (841017828).

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

422019612 is a wasteful number, since it uses less digits than its factorization.

422019612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5648 (or 5640 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 422019612 is about 20543.1159272395. The cubic root of 422019612 is about 750.0856862101.

Adding to 422019612 its reverse (216910224), we get a palindrome (638929836).

It can be divided in two parts, 4220 and 19612, that added together give a palindrome (23832).

The spelling of 422019612 in words is "four hundred twenty-two million, nineteen thousand, six hundred twelve".