1244431120 has 20 divisors (see below), whose sum is σ = 2893302540. Its totient is φ = 497772416.

The previous prime is 1244431099. The next prime is 1244431157. The reversal of 1244431120 is 211344421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 853340944 + 391090176 = 29212^2 + 19776^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1244431091 and 1244431100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7777615 + ... + 7777774.

It is an arithmetic number, because the mean of its divisors is an integer number (144665127).

Almost surely, 2^1244431120 is an apocalyptic number.

1244431120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244431120 is an abundant number, since it is smaller than the sum of its proper divisors (1648871420).

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

1244431120 is a wasteful number, since it uses less digits than its factorization.

1244431120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555402 (or 15555396 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1244431120 is about 35276.4952907740. The cubic root of 1244431120 is about 1075.6152584002.

Adding to 1244431120 its reverse (211344421), we get a palindrome (1455775541).

The spelling of 1244431120 in words is "one billion, two hundred forty-four million, four hundred thirty-one thousand, one hundred twenty".