142222000 has 160 divisors (see below), whose sum is σ = 376047360. Its totient is φ = 51814400.

The previous prime is 142221997. The next prime is 142222007. The reversal of 142222000 is 222241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142222007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1597956 + ... + 1598044.

It is an arithmetic number, because the mean of its divisors is an integer number (2350296).

Almost surely, 2^142222000 is an apocalyptic number.

142222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188023680).

142222000 is an abundant number, since it is smaller than the sum of its proper divisors (233825360).

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

142222000 is a wasteful number, since it uses less digits than its factorization.

142222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 142222000 is about 11925.6865630453. The cubic root of 142222000 is about 521.9820802899.

Adding to 142222000 its reverse (222241), we get a palindrome (142444241).

The spelling of 142222000 in words is "one hundred forty-two million, two hundred twenty-two thousand".