1244421012 has 48 divisors (see below), whose sum is σ = 3149459712. Its totient is φ = 380881920.

The previous prime is 1244420959. The next prime is 1244421023. The reversal of 1244421012 is 2101244421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244421012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66028 + ... + 82755.

It is an arithmetic number, because the mean of its divisors is an integer number (65613744).

Almost surely, 2^1244421012 is an apocalyptic number.

1244421012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244421012 is an abundant number, since it is smaller than the sum of its proper divisors (1905038700).

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

1244421012 is a wasteful number, since it uses less digits than its factorization.

1244421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148848 (or 148846 counting only the distinct ones).

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

The square root of 1244421012 is about 35276.3520222826. The cubic root of 1244421012 is about 1075.6123461328.

Adding to 1244421012 its reverse (2101244421), we get a palindrome (3345665433).

The spelling of 1244421012 in words is "one billion, two hundred forty-four million, four hundred twenty-one thousand, twelve".