1022440420 has 12 divisors (see below), whose sum is σ = 2147124924. Its totient is φ = 408976160.

The previous prime is 1022440417. The next prime is 1022440427. The reversal of 1022440420 is 240442201.

It can be written as a sum of positive squares in 2 ways, for example, as 457617664 + 564822756 = 21392^2 + 23766^2 .

It is not an unprimeable number, because it can be changed into a prime (1022440427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25560991 + ... + 25561030.

It is an arithmetic number, because the mean of its divisors is an integer number (178927077).

Almost surely, 2^1022440420 is an apocalyptic number.

1022440420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022440420 is an abundant number, since it is smaller than the sum of its proper divisors (1124684504).

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

1022440420 is a wasteful number, since it uses less digits than its factorization.

1022440420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51122030 (or 51122028 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1022440420 is about 31975.6222769784. The cubic root of 1022440420 is about 1007.4248747929.

Adding to 1022440420 its reverse (240442201), we get a palindrome (1262882621).

The spelling of 1022440420 in words is "one billion, twenty-two million, four hundred forty thousand, four hundred twenty".