1244145144 has 64 divisors (see below), whose sum is σ = 3472064640. Its totient is φ = 368242560.

The previous prime is 1244145143. The next prime is 1244145181. The reversal of 1244145144 is 4415414421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244145143) by changing a digit.

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, 43447 + ... + 66150.

It is an arithmetic number, because the mean of its divisors is an integer number (54251010).

Almost surely, 2^1244145144 is an apocalyptic number.

It is an amenable number.

1244145144 is an abundant number, since it is smaller than the sum of its proper divisors (2227919496).

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

1244145144 is a wasteful number, since it uses less digits than its factorization.

1244145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109660 (or 109656 counting only the distinct ones).

The product of its digits is 10240, while the sum is 30.

The square root of 1244145144 is about 35272.4417073726. The cubic root of 1244145144 is about 1075.5328583086.

Adding to 1244145144 its reverse (4415414421), we get a palindrome (5659559565).

The spelling of 1244145144 in words is "one billion, two hundred forty-four million, one hundred forty-five thousand, one hundred forty-four".