142424144 has 20 divisors (see below), whose sum is σ = 281154996. Its totient is φ = 69868032.

The previous prime is 142424141. The next prime is 142424159. The reversal of 142424144 is 441424241.

It can be written as a sum of positive squares in 2 ways, for example, as 121264144 + 21160000 = 11012^2 + 4600^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142424141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83129 + ... + 84824.

Almost surely, 2^142424144 is an apocalyptic number.

It is an amenable number.

142424144 is a deficient number, since it is larger than the sum of its proper divisors (138730852).

142424144 is a wasteful number, since it uses less digits than its factorization.

142424144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168014 (or 168008 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 142424144 is about 11934.1587051623. The cubic root of 142424144 is about 522.2292656629.

Adding to 142424144 its reverse (441424241), we get a palindrome (583848385).

The spelling of 142424144 in words is "one hundred forty-two million, four hundred twenty-four thousand, one hundred forty-four".