142421420020 has 24 divisors (see below), whose sum is σ = 326274526368. Its totient is φ = 51789607200.

The previous prime is 142421420017. The next prime is 142421420039. The reversal of 142421420020 is 20024124241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 142421419973 and 142421420000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323684826 + ... + 323685265.

It is an arithmetic number, because the mean of its divisors is an integer number (13594771932).

Almost surely, 2^142421420020 is an apocalyptic number.

142421420020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142421420020 is an abundant number, since it is smaller than the sum of its proper divisors (183853106348).

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

142421420020 is a wasteful number, since it uses less digits than its factorization.

142421420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647370111 (or 647370109 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 142421420020 its reverse (20024124241), we get a palindrome (162445544261).

The spelling of 142421420020 in words is "one hundred forty-two billion, four hundred twenty-one million, four hundred twenty thousand, twenty".