1023321242420 has 24 divisors (see below), whose sum is σ = 2154830141184. Its totient is φ = 408213157536.

The previous prime is 1023321242351. The next prime is 1023321242423. The reversal of 1023321242420 is 242421233201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023321242420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023321242423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69701192 + ... + 69715871.

It is an arithmetic number, because the mean of its divisors is an integer number (89784589216).

Almost surely, 2^{1023321242420} is an apocalyptic number.

1023321242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023321242420 is an abundant number, since it is smaller than the sum of its proper divisors (1131508898764).

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

1023321242420 is a wasteful number, since it uses less digits than its factorization.

1023321242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139417439 (or 139417437 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1023321242420 its reverse (242421233201), we get a palindrome (1265742475621).

The spelling of 1023321242420 in words is "one trillion, twenty-three billion, three hundred twenty-one million, two hundred forty-two thousand, four hundred twenty".