1244123340 has 48 divisors (see below), whose sum is σ = 3496168032. Its totient is φ = 330564096.

The previous prime is 1244123317. The next prime is 1244123351. The reversal of 1244123340 is 433214421.

It is a self number, because there is not a number n which added to its sum of digits gives 1244123340.

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, 20809 + ... + 54048.

It is an arithmetic number, because the mean of its divisors is an integer number (72836834).

Almost surely, 2^1244123340 is an apocalyptic number.

1244123340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244123340 is an abundant number, since it is smaller than the sum of its proper divisors (2252044692).

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

1244123340 is a wasteful number, since it uses less digits than its factorization.

1244123340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75146 (or 75144 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1244123340 is about 35272.1326261966. The cubic root of 1244123340 is about 1075.5265752648.

Adding to 1244123340 its reverse (433214421), we get a palindrome (1677337761).

The spelling of 1244123340 in words is "one billion, two hundred forty-four million, one hundred twenty-three thousand, three hundred forty".