1031242120000 has 140 divisors (see below), whose sum is σ = 2600492700960. Its totient is φ = 405504448000.

The previous prime is 1031242119991. The next prime is 1031242120003. The reversal of 1031242120000 is 212421301.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031242120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2141517 + ... + 2578483.

It is an arithmetic number, because the mean of its divisors is an integer number (18574947864).

Almost surely, 2^{1031242120000} is an apocalyptic number.

1031242120000 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 1031242120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300246350480).

1031242120000 is an abundant number, since it is smaller than the sum of its proper divisors (1569250580960).

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

1031242120000 is an frugal number, since it uses more digits than its factorization.

1031242120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437058 (or 437033 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1031242120000 its reverse (212421301), we get a palindrome (1031454541301).

The spelling of 1031242120000 in words is "one trillion, thirty-one billion, two hundred forty-two million, one hundred twenty thousand".