142520544 has 72 divisors (see below), whose sum is σ = 413955360. Its totient is φ = 46491648.

The previous prime is 142520527. The next prime is 142520557. The reversal of 142520544 is 445025241.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 8272 + ... + 18800.

It is an arithmetic number, because the mean of its divisors is an integer number (5749380).

Almost surely, 2^142520544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142520544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206977680).

142520544 is an abundant number, since it is smaller than the sum of its proper divisors (271434816).

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

142520544 is a wasteful number, since it uses less digits than its factorization.

142520544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10592 (or 10581 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 142520544 is about 11938.1968487708. The cubic root of 142520544 is about 522.3470629826.

Adding to 142520544 its reverse (445025241), we get a palindrome (587545785).

The spelling of 142520544 in words is "one hundred forty-two million, five hundred twenty thousand, five hundred forty-four".