142920220 has 24 divisors (see below), whose sum is σ = 300585600. Its totient is φ = 57081792.

The previous prime is 142920209. The next prime is 142920227. The reversal of 142920220 is 22029241.

142920220 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 = 142920191 and 142920200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142920227) 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, 9141 + ... + 19219.

It is an arithmetic number, because the mean of its divisors is an integer number (12524400).

Almost surely, 2^142920220 is an apocalyptic number.

142920220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142920220 is an abundant number, since it is smaller than the sum of its proper divisors (157665380).

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

142920220 is a wasteful number, since it uses less digits than its factorization.

142920220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10797 (or 10795 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 142920220 is about 11954.9245083355. The cubic root of 142920220 is about 522.8348867699.

Adding to 142920220 its reverse (22029241), we get a palindrome (164949461).

The spelling of 142920220 in words is "one hundred forty-two million, nine hundred twenty thousand, two hundred twenty".