1244211420 has 48 divisors (see below), whose sum is σ = 3568769568. Its totient is φ = 323696640.

The previous prime is 1244211403. The next prime is 1244211431. The reversal of 1244211420 is 241124421.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 250429 + ... + 255348.

It is an arithmetic number, because the mean of its divisors is an integer number (74349366).

Almost surely, 2^1244211420 is an apocalyptic number.

1244211420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244211420 is an abundant number, since it is smaller than the sum of its proper divisors (2324558148).

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

1244211420 is a wasteful number, since it uses less digits than its factorization.

1244211420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505830 (or 505828 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1244211420 is about 35273.3811818487. The cubic root of 1244211420 is about 1075.5519559598.

Adding to 1244211420 its reverse (241124421), we get a palindrome (1485335841).

The spelling of 1244211420 in words is "one billion, two hundred forty-four million, two hundred eleven thousand, four hundred twenty".