142145224 has 24 divisors (see below), whose sum is σ = 288603810. Its totient is φ = 65604864.

The previous prime is 142145207. The next prime is 142145233. The reversal of 142145224 is 422541241.

142145224 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 35022724 + 107122500 = 5918^2 + 10350^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51217 + ... + 53920.

Almost surely, 2^142145224 is an apocalyptic number.

It is an amenable number.

142145224 is an abundant number, since it is smaller than the sum of its proper divisors (146458586).

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

142145224 is a wasteful number, since it uses less digits than its factorization.

142145224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105169 (or 105152 counting only the distinct ones).

The product of its digits is 2560, while the sum is 25.

The square root of 142145224 is about 11922.4671943352. The cubic root of 142145224 is about 521.8881358234. Note that the first 3 decimals are identical.

Adding to 142145224 its reverse (422541241), we get a palindrome (564686465).

The spelling of 142145224 in words is "one hundred forty-two million, one hundred forty-five thousand, two hundred twenty-four".