142544520 has 96 divisors (see below), whose sum is σ = 466240320. Its totient is φ = 37768320.

The previous prime is 142544509. The next prime is 142544533. The reversal of 142544520 is 25445241.

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 23 ways as a sum of consecutive naturals, for example, 58935 + ... + 61305.

It is an arithmetic number, because the mean of its divisors is an integer number (4856670).

Almost surely, 2^142544520 is an apocalyptic number.

142544520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142544520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233120160).

142544520 is an abundant number, since it is smaller than the sum of its proper divisors (323695800).

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

142544520 is a wasteful number, since it uses less digits than its factorization.

142544520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555 (or 2548 counting only the distinct ones).

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

The square root of 142544520 is about 11939.2009782900. The cubic root of 142544520 is about 522.3763525400.

Adding to 142544520 its reverse (25445241), we get a palindrome (167989761).

The spelling of 142544520 in words is "one hundred forty-two million, five hundred forty-four thousand, five hundred twenty".