1042551400000 has 168 divisors, whose sum is σ = 2820933948672. Its totient is φ = 379108800000.

The previous prime is 1042551399983. The next prime is 1042551400001. The reversal of 1042551400000 is 41552401.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1042551400001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1963057 + ... + 2436943.

It is an arithmetic number, because the mean of its divisors is an integer number (16791273504).

Almost surely, 2^{1042551400000} is an apocalyptic number.

1042551400000 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 1042551400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410466974336).

1042551400000 is an abundant number, since it is smaller than the sum of its proper divisors (1778382548672).

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

1042551400000 is an frugal number, since it uses more digits than its factorization.

1042551400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473935 (or 473905 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 1042551400000 its reverse (41552401), we get a palindrome (1042592952401).

The spelling of 1042551400000 in words is "one trillion, forty-two billion, five hundred fifty-one million, four hundred thousand".