1142103323420 has 96 divisors (see below), whose sum is σ = 2495556737856. Its totient is φ = 438699571200.

The previous prime is 1142103323419. The next prime is 1142103323423. The reversal of 1142103323420 is 243233012411.

It is a self number, because there is not a number n which added to its sum of digits gives 1142103323420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142103323423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75864614 + ... + 75879666.

It is an arithmetic number, because the mean of its divisors is an integer number (25995382686).

Almost surely, 2^{1142103323420} is an apocalyptic number.

1142103323420 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 1142103323420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247778368928).

1142103323420 is an abundant number, since it is smaller than the sum of its proper divisors (1353453414436).

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

1142103323420 is a wasteful number, since it uses less digits than its factorization.

1142103323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16551 (or 16549 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1142103323420 its reverse (243233012411), we get a palindrome (1385336335831).

The spelling of 1142103323420 in words is "one trillion, one hundred forty-two billion, one hundred three million, three hundred twenty-three thousand, four hundred twenty".