1244121552 has 40 divisors (see below), whose sum is σ = 3571090880. Its totient is φ = 414707040.

The previous prime is 1244121521. The next prime is 1244121563. The reversal of 1244121552 is 2551214421.

It is a happy number.

1244121552 is a `hidden beast` number, since 1 + 2 + 441 + 215 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439524 + ... + 1440387.

It is an arithmetic number, because the mean of its divisors is an integer number (89277272).

Almost surely, 2^1244121552 is an apocalyptic number.

1244121552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244121552 is an abundant number, since it is smaller than the sum of its proper divisors (2326969328).

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

1244121552 is a wasteful number, since it uses less digits than its factorization.

1244121552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879928 (or 2879916 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 1244121552 is about 35272.1072803993. The cubic root of 1244121552 is about 1075.5260600312.

Adding to 1244121552 its reverse (2551214421), we get a palindrome (3795335973).

The spelling of 1244121552 in words is "one billion, two hundred forty-four million, one hundred twenty-one thousand, five hundred fifty-two".