1234552545420 has 96 divisors (see below), whose sum is σ = 3510186140160. Its totient is φ = 324137157120.

The previous prime is 1234552545419. The next prime is 1234552545437. The reversal of 1234552545420 is 245452554321.

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 31 ways as a sum of consecutive naturals, for example, 2952064 + ... + 3344216.

It is an arithmetic number, because the mean of its divisors is an integer number (36564438960).

Almost surely, 2^{1234552545420} is an apocalyptic number.

1234552545420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234552545420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1755093070080).

1234552545420 is an abundant number, since it is smaller than the sum of its proper divisors (2275633594740).

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

1234552545420 is a wasteful number, since it uses less digits than its factorization.

1234552545420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392975 (or 392973 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 1234552545420 in words is "one trillion, two hundred thirty-four billion, five hundred fifty-two million, five hundred forty-five thousand, four hundred twenty".