1422004220 has 48 divisors (see below), whose sum is σ = 3675338688. Its totient is φ = 450040320.

The previous prime is 1422004217. The next prime is 1422004229. The reversal of 1422004220 is 224002241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422004229) 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, 388841 + ... + 392480.

It is an arithmetic number, because the mean of its divisors is an integer number (76569556).

Almost surely, 2^1422004220 is an apocalyptic number.

1422004220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422004220 is an abundant number, since it is smaller than the sum of its proper divisors (2253334468).

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

1422004220 is a wasteful number, since it uses less digits than its factorization.

1422004220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781350 (or 781348 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1422004220 is about 37709.4712240837. The cubic root of 1422004220 is about 1124.5194246969.

Adding to 1422004220 its reverse (224002241), we get a palindrome (1646006461).

The spelling of 1422004220 in words is "one billion, four hundred twenty-two million, four thousand, two hundred twenty".