142530644 has 12 divisors (see below), whose sum is σ = 249857664. Its totient is φ = 71142744.

The previous prime is 142530643. The next prime is 142530677. The reversal of 142530644 is 446035241.

142530644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142530643) 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, 28004 + ... + 32699.

It is an arithmetic number, because the mean of its divisors is an integer number (20821472).

Almost surely, 2^142530644 is an apocalyptic number.

It is an amenable number.

142530644 is a deficient number, since it is larger than the sum of its proper divisors (107327020).

142530644 is a wasteful number, since it uses less digits than its factorization.

142530644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61294 (or 61292 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 142530644 is about 11938.6198532326. The cubic root of 142530644 is about 522.3594017434.

Adding to 142530644 its reverse (446035241), we get a palindrome (588565885).

The spelling of 142530644 in words is "one hundred forty-two million, five hundred thirty thousand, six hundred forty-four".