1054205423440 has 80 divisors (see below), whose sum is σ = 2639737296000. Its totient is φ = 389220143616.

The previous prime is 1054205423431. The next prime is 1054205423459. The reversal of 1054205423440 is 443245024501.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1054205423440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1054205423396 and 1054205423405.

It is a congruent number.

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, 27123541 + ... + 27162379.

It is an arithmetic number, because the mean of its divisors is an integer number (32996716200).

Almost surely, 2^{1054205423440} is an apocalyptic number.

1054205423440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1054205423440 is an abundant number, since it is smaller than the sum of its proper divisors (1585531872560).

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

1054205423440 is a wasteful number, since it uses less digits than its factorization.

1054205423440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64964 (or 64958 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 1054205423440 in words is "one trillion, fifty-four billion, two hundred five million, four hundred twenty-three thousand, four hundred forty".