142221022 has 8 divisors (see below), whose sum is σ = 213383016. Its totient is φ = 71093352.

The previous prime is 142221019. The next prime is 142221043. The reversal of 142221022 is 220122241.

142221022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142220987 and 142221005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8913 + ... + 19075.

It is an arithmetic number, because the mean of its divisors is an integer number (26672877).

Almost surely, 2^142221022 is an apocalyptic number.

142221022 is a deficient number, since it is larger than the sum of its proper divisors (71161994).

142221022 is a wasteful number, since it uses less digits than its factorization.

142221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17162.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142221022 is about 11925.6455590463. The cubic root of 142221022 is about 521.9808838045.

Adding to 142221022 its reverse (220122241), we get a palindrome (362343263).

The spelling of 142221022 in words is "one hundred forty-two million, two hundred twenty-one thousand, twenty-two".