1244140100 has 72 divisors (see below), whose sum is σ = 3129049728. Its totient is φ = 420537600.

The previous prime is 1244140099. The next prime is 1244140109. The reversal of 1244140100 is 10414421.

It is not an unprimeable number, because it can be changed into a prime (1244140109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37184 + ... + 62216.

It is an arithmetic number, because the mean of its divisors is an integer number (43459024).

Almost surely, 2^1244140100 is an apocalyptic number.

1244140100 is a gapful number since it is divisible by the number (10) 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 1244140100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1564524864).

1244140100 is an abundant number, since it is smaller than the sum of its proper divisors (1884909628).

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

1244140100 is a wasteful number, since it uses less digits than its factorization.

1244140100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25125 (or 25118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1244140100 is about 35272.3702067213. The cubic root of 1244140100 is about 1075.5314048354.

Adding to 1244140100 its reverse (10414421), we get a palindrome (1254554521).

The spelling of 1244140100 in words is "one billion, two hundred forty-four million, one hundred forty thousand, one hundred".