142203222 has 32 divisors (see below), whose sum is σ = 361152000. Its totient is φ = 40629384.

The previous prime is 142203209. The next prime is 142203223. The reversal of 142203222 is 222302241.

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

It is a junction number, because it is equal to n+sod(n) for n = 142203195 and 142203204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142203223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187722 + ... + 188477.

It is an arithmetic number, because the mean of its divisors is an integer number (11286000).

Almost surely, 2^142203222 is an apocalyptic number.

142203222 is an abundant number, since it is smaller than the sum of its proper divisors (218948778).

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

142203222 is a wasteful number, since it uses less digits than its factorization.

142203222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376217 (or 376211 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142203222 is about 11924.8992448574. The cubic root of 142203222 is about 521.9591063222.

Adding to 142203222 its reverse (222302241), we get a palindrome (364505463).

The spelling of 142203222 in words is "one hundred forty-two million, two hundred three thousand, two hundred twenty-two".