142040244 has 24 divisors (see below), whose sum is σ = 331629760. Its totient is φ = 47317824.

The previous prime is 142040237. The next prime is 142040267. The reversal of 142040244 is 442040241.

It is a self number, because there is not a number n which added to its sum of digits gives 142040244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27672 + ... + 32400.

Almost surely, 2^142040244 is an apocalyptic number.

It is an amenable number.

142040244 is an abundant number, since it is smaller than the sum of its proper divisors (189589516).

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

142040244 is a wasteful number, since it uses less digits than its factorization.

142040244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7239 (or 7237 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142040244 is about 11918.0637689182. The cubic root of 142040244 is about 521.7596256792.

Adding to 142040244 its reverse (442040241), we get a palindrome (584080485).

The spelling of 142040244 in words is "one hundred forty-two million, forty thousand, two hundred forty-four".