142013021220020 has 12 divisors (see below), whose sum is σ = 298227344562084. Its totient is φ = 56805208488000.

The previous prime is 142013021219987. The next prime is 142013021220041. The reversal of 142013021220020 is 20022120310241.

It can be written as a sum of positive squares in 2 ways, for example, as 20448592528144 + 121564428691876 = 4522012^2 + 11025626^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 7100651061001 = 142013021220020 / (1 + 4 + 2 + 0 + 1 + 3 + 0 + 2 + 1 + 2 + 2 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 142013021219974 and 142013021220001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550325530481 + ... + 3550325530520.

It is an arithmetic number, because the mean of its divisors is an integer number (24852278713507).

Almost surely, 2^{142013021220020} is an apocalyptic number.

142013021220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142013021220020 is an abundant number, since it is smaller than the sum of its proper divisors (156214323342064).

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

142013021220020 is a wasteful number, since it uses less digits than its factorization.

142013021220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100651061010 (or 7100651061008 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 142013021220020 its reverse (20022120310241), we get a palindrome (162035141530261).

The spelling of 142013021220020 in words is "one hundred forty-two trillion, thirteen billion, twenty-one million, two hundred twenty thousand, twenty".