142143522 has 32 divisors (see below), whose sum is σ = 300024000. Its totient is φ = 44771328.

The previous prime is 142143517. The next prime is 142143523. The reversal of 142143522 is 225341241.

It is a junction number, because it is equal to n+sod(n) for n = 142143492 and 142143501.

It is not an unprimeable number, because it can be changed into a prime (142143523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49798 + ... + 52574.

It is an arithmetic number, because the mean of its divisors is an integer number (9375750).

Almost surely, 2^142143522 is an apocalyptic number.

142143522 is an abundant number, since it is smaller than the sum of its proper divisors (157880478).

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

142143522 is a wasteful number, since it uses less digits than its factorization.

142143522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its digits is 1920, while the sum is 24.

The square root of 142143522 is about 11922.3958162779. The cubic root of 142143522 is about 521.8860528430.

Adding to 142143522 its reverse (225341241), we get a palindrome (367484763).

The spelling of 142143522 in words is "one hundred forty-two million, one hundred forty-three thousand, five hundred twenty-two".