142232218 has 16 divisors (see below), whose sum is σ = 224215200. Its totient is φ = 67583376.

The previous prime is 142232191. The next prime is 142232219. The reversal of 142232218 is 812232241.

It is a junction number, because it is equal to n+sod(n) for n = 142232192 and 142232201.

It is not an unprimeable number, because it can be changed into a prime (142232219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19168 + ... + 25531.

It is an arithmetic number, because the mean of its divisors is an integer number (14013450).

Almost surely, 2^142232218 is an apocalyptic number.

142232218 is a deficient number, since it is larger than the sum of its proper divisors (81982982).

142232218 is a wasteful number, since it uses less digits than its factorization.

142232218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44781.

The product of its digits is 1536, while the sum is 25.

The square root of 142232218 is about 11926.1149583592. The cubic root of 142232218 is about 521.9945806653.

Adding to 142232218 its reverse (812232241), we get a palindrome (954464459).

The spelling of 142232218 in words is "one hundred forty-two million, two hundred thirty-two thousand, two hundred eighteen".