142220225 has 24 divisors (see below), whose sum is σ = 212159040. Its totient is φ = 92387520.

The previous prime is 142220209. The next prime is 142220231. The reversal of 142220225 is 522022241.

It is not a de Polignac number, because 142220225 - 2⁴ = 142220209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142220197 and 142220206.

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 23 ways as a sum of consecutive naturals, for example, 18062 + ... + 24711.

It is an arithmetic number, because the mean of its divisors is an integer number (8839960).

Almost surely, 2^142220225 is an apocalyptic number.

It is an amenable number.

142220225 is a deficient number, since it is larger than the sum of its proper divisors (69938815).

142220225 is a wasteful number, since it uses less digits than its factorization.

142220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42809 (or 42804 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 142220225 is about 11925.6121436176. The cubic root of 142220225 is about 521.9799087505.

Adding to 142220225 its reverse (522022241), we get a palindrome (664242466).

The spelling of 142220225 in words is "one hundred forty-two million, two hundred twenty thousand, two hundred twenty-five".