142101222 has 32 divisors (see below), whose sum is σ = 298121472. Its totient is φ = 45069024.

The previous prime is 142101221. The next prime is 142101233. The reversal of 142101222 is 222101241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142101221) 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 15 ways as a sum of consecutive naturals, for example, 24573 + ... + 29799.

It is an arithmetic number, because the mean of its divisors is an integer number (9316296).

Almost surely, 2^142101222 is an apocalyptic number.

142101222 is an abundant number, since it is smaller than the sum of its proper divisors (156020250).

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

142101222 is a wasteful number, since it uses less digits than its factorization.

142101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 142101222 is about 11920.6217119746. The cubic root of 142101222 is about 521.8342789506.

Adding to 142101222 its reverse (222101241), we get a palindrome (364202463).

The spelling of 142101222 in words is "one hundred forty-two million, one hundred one thousand, two hundred twenty-two".