142136522 has 12 divisors (see below), whose sum is σ = 234349458. Its totient is φ = 64607400.

The previous prime is 142136521. The next prime is 142136557. The reversal of 142136522 is 225631241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79584241 + 62552281 = 8921^2 + 7909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142136491 and 142136500.

It is not an unprimeable number, because it can be changed into a prime (142136521) 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 5 ways as a sum of consecutive naturals, for example, 293429 + ... + 293912.

Almost surely, 2^142136522 is an apocalyptic number.

142136522 is a deficient number, since it is larger than the sum of its proper divisors (92212936).

142136522 is a wasteful number, since it uses less digits than its factorization.

142136522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587365 (or 587354 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 142136522 is about 11922.1022475065. The cubic root of 142136522 is about 521.8774857687.

Adding to 142136522 its reverse (225631241), we get a palindrome (367767763).

The spelling of 142136522 in words is "one hundred forty-two million, one hundred thirty-six thousand, five hundred twenty-two".