142222500 has 360 divisors, whose sum is σ = 548449440. Its totient is φ = 31752000.

The previous prime is 142222489. The next prime is 142222519. The reversal of 142222500 is 5222241.

142222500 is a `hidden beast` number, since 142 + 2 + 22 + 500 = 666.

142222500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 3307479 + ... + 3307521.

Almost surely, 2^142222500 is an apocalyptic number.

142222500 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 142222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274224720).

142222500 is an abundant number, since it is smaller than the sum of its proper divisors (406226940).

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

142222500 is a wasteful number, since it uses less digits than its factorization.

142222500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 142222500 is about 11925.7075261806. The cubic root of 142222500 is about 521.9826919879.

Adding to 142222500 its reverse (5222241), we get a palindrome (147444741).

The spelling of 142222500 in words is "one hundred forty-two million, two hundred twenty-two thousand, five hundred".