142221020 has 24 divisors (see below), whose sum is σ = 301408800. Its totient is φ = 56365632.

The previous prime is 142221019. The next prime is 142221043. The reversal of 142221020 is 20122241.

142221020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142220986 and 142221004.

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, 30440 + ... + 34799.

It is an arithmetic number, because the mean of its divisors is an integer number (12558700).

Almost surely, 2^142221020 is an apocalyptic number.

142221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142221020 is an abundant number, since it is smaller than the sum of its proper divisors (159187780).

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

142221020 is a wasteful number, since it uses less digits than its factorization.

142221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65357 (or 65355 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 142221020 is about 11925.6454751934. The cubic root of 142221020 is about 521.9808813577.

Adding to 142221020 its reverse (20122241), we get a palindrome (162343261).

The spelling of 142221020 in words is "one hundred forty-two million, two hundred twenty-one thousand, twenty".