1243097053920 has 144 divisors (see below), whose sum is σ = 4242904454880. Its totient is φ = 331427238912.

The previous prime is 1243097053903. The next prime is 1243097053967. The reversal of 1243097053920 is 293507903421.

1243097053920 is a `hidden beast` number, since 1 + 2 + 4 + 3 + 0 + 97 + 0 + 539 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7458861 + ... + 7623699.

It is an arithmetic number, because the mean of its divisors is an integer number (29464614270).

Almost surely, 2^{1243097053920} is an apocalyptic number.

1243097053920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243097053920 is an abundant number, since it is smaller than the sum of its proper divisors (2999807400960).

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

1243097053920 is a wasteful number, since it uses less digits than its factorization.

1243097053920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170097 (or 170086 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 1243097053920 in words is "one trillion, two hundred forty-three billion, ninety-seven million, fifty-three thousand, nine hundred twenty".