142224240 has 40 divisors (see below), whose sum is σ = 440895888. Its totient is φ = 37926400.

The previous prime is 142224233. The next prime is 142224283. The reversal of 142224240 is 42422241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 296061 + ... + 296540.

Almost surely, 2^142224240 is an apocalyptic number.

142224240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142224240 is an abundant number, since it is smaller than the sum of its proper divisors (298671648).

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

142224240 is a wasteful number, since it uses less digits than its factorization.

142224240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592617 (or 592611 counting only the distinct ones).

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

The square root of 142224240 is about 11925.7804776040. The cubic root of 142224240 is about 521.9848206857.

Adding to 142224240 its reverse (42422241), we get a palindrome (184646481).

The spelling of 142224240 in words is "one hundred forty-two million, two hundred twenty-four thousand, two hundred forty".