142320020 has 24 divisors (see below), whose sum is σ = 306163368. Its totient is φ = 55539200.

The previous prime is 142320011. The next prime is 142320041. The reversal of 142320020 is 20023241.

142320020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3928324 + 138391696 = 1982^2 + 11764^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142319977 and 142320004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85961 + ... + 87600.

It is an arithmetic number, because the mean of its divisors is an integer number (12756807).

Almost surely, 2^142320020 is an apocalyptic number.

142320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142320020 is an abundant number, since it is smaller than the sum of its proper divisors (163843348).

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

142320020 is a wasteful number, since it uses less digits than its factorization.

142320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173611 (or 173609 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 142320020 is about 11929.7954718428. The cubic root of 142320020 is about 522.1019701656.

Adding to 142320020 its reverse (20023241), we get a palindrome (162343261).

The spelling of 142320020 in words is "one hundred forty-two million, three hundred twenty thousand, twenty".