1013321240420 has 24 divisors (see below), whose sum is σ = 2128082947704. Its totient is φ = 405307859456.

The previous prime is 1013321240333. The next prime is 1013321240423. The reversal of 1013321240420 is 240421233101.

It can be written as a sum of positive squares in 4 ways, for example, as 270266896384 + 743054344036 = 519872^2 + 862006^2 .

It is not an unprimeable number, because it can be changed into a prime (1013321240423) 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, 884039 + ... + 1675758.

It is an arithmetic number, because the mean of its divisors is an integer number (88670122821).

Almost surely, 2^{1013321240420} is an apocalyptic number.

1013321240420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013321240420 is an abundant number, since it is smaller than the sum of its proper divisors (1114761707284).

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

1013321240420 is a wasteful number, since it uses less digits than its factorization.

1013321240420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579599 (or 2579597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1013321240420 its reverse (240421233101), we get a palindrome (1253742473521).

The spelling of 1013321240420 in words is "one trillion, thirteen billion, three hundred twenty-one million, two hundred forty thousand, four hundred twenty".