142220136 has 16 divisors (see below), whose sum is σ = 355550400. Its totient is φ = 47406704.

The previous prime is 142220107. The next prime is 142220137. The reversal of 142220136 is 631022241.

It is not an unprimeable number, because it can be changed into a prime (142220137) 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 3 ways as a sum of consecutive naturals, for example, 2962896 + ... + 2962943.

It is an arithmetic number, because the mean of its divisors is an integer number (22221900).

Almost surely, 2^142220136 is an apocalyptic number.

It is an amenable number.

142220136 is an abundant number, since it is smaller than the sum of its proper divisors (213330264).

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

142220136 is a wasteful number, since it uses less digits than its factorization.

142220136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925848 (or 5925844 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 142220136 is about 11925.6084121524. The cubic root of 142220136 is about 521.9797998672.

Adding to 142220136 its reverse (631022241), we get a palindrome (773242377).

The spelling of 142220136 in words is "one hundred forty-two million, two hundred twenty thousand, one hundred thirty-six".