142220222 has 4 divisors (see below), whose sum is σ = 213330336. Its totient is φ = 71110110.

The previous prime is 142220209. The next prime is 142220231. The reversal of 142220222 is 222022241.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142220222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35555054 + ... + 35555057.

It is an arithmetic number, because the mean of its divisors is an integer number (53332584).

Almost surely, 2^142220222 is an apocalyptic number.

142220222 is a deficient number, since it is larger than the sum of its proper divisors (71110114).

142220222 is an equidigital number, since it uses as much as digits as its factorization.

142220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71110113.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 142220222 is about 11925.6120178379. The cubic root of 142220222 is about 521.9799050802.

Adding to 142220222 its reverse (222022241), we get a palindrome (364242463).

The spelling of 142220222 in words is "one hundred forty-two million, two hundred twenty thousand, two hundred twenty-two".