1123356801240 has 96 divisors (see below), whose sum is σ = 3651522217200. Its totient is φ = 299511548160.

The previous prime is 1123356801169. The next prime is 1123356801269. The reversal of 1123356801240 is 421086533211.

1123356801240 is a `hidden beast` number, since 1 + 1 + 2 + 335 + 6 + 80 + 1 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1123356801195 and 1123356801204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1911655 + ... + 2429225.

Almost surely, 2^{1123356801240} is an apocalyptic number.

1123356801240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123356801240 is an abundant number, since it is smaller than the sum of its proper divisors (2528165415960).

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

1123356801240 is a wasteful number, since it uses less digits than its factorization.

1123356801240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523617 (or 523610 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 1123356801240 in words is "one trillion, one hundred twenty-three billion, three hundred fifty-six million, eight hundred one thousand, two hundred forty".