142212133 has 16 divisors (see below), whose sum is σ = 164381184. Its totient is φ = 120516480.

The previous prime is 142212107. The next prime is 142212139. The reversal of 142212133 is 331212241.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-142212133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142212133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142212139) 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, 387316 + ... + 387682.

It is an arithmetic number, because the mean of its divisors is an integer number (10273824).

Almost surely, 2^142212133 is an apocalyptic number.

It is an amenable number.

142212133 is a deficient number, since it is larger than the sum of its proper divisors (22169051).

142212133 is a wasteful number, since it uses less digits than its factorization.

142212133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852.

The product of its digits is 288, while the sum is 19.

The square root of 142212133 is about 11925.2728689955. The cubic root of 142212133 is about 521.9700087485.

Adding to 142212133 its reverse (331212241), we get a palindrome (473424374).

The spelling of 142212133 in words is "one hundred forty-two million, two hundred twelve thousand, one hundred thirty-three".