1124720285640 has 64 divisors (see below), whose sum is σ = 3856183839360. Its totient is φ = 257078922240.

The previous prime is 1124720285599. The next prime is 1124720285687. The reversal of 1124720285640 is 465820274211.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1124720285592 and 1124720285601.

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, 669475521 + ... + 669477200.

It is an arithmetic number, because the mean of its divisors is an integer number (60252872490).

Almost surely, 2^{1124720285640} is an apocalyptic number.

1124720285640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1124720285640 is an abundant number, since it is smaller than the sum of its proper divisors (2731463553720).

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

1124720285640 is a wasteful number, since it uses less digits than its factorization.

1124720285640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338952742 (or 1338952738 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

It can be divided in two parts, 1124720 and 285640, that added together give a triangular number (1410360 = T₁₆₇₉).

The spelling of 1124720285640 in words is "one trillion, one hundred twenty-four billion, seven hundred twenty million, two hundred eighty-five thousand, six hundred forty".