142142520 has 192 divisors, whose sum is σ = 475390080. Its totient is φ = 33965568.

The previous prime is 142142479. The next prime is 142142537. The reversal of 142142520 is 25241241.

142142520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 871959 + ... + 872121.

It is an arithmetic number, because the mean of its divisors is an integer number (2475990).

Almost surely, 2^142142520 is an apocalyptic number.

142142520 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 142142520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237695040).

142142520 is an abundant number, since it is smaller than the sum of its proper divisors (333247560).

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

142142520 is a wasteful number, since it uses less digits than its factorization.

142142520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142142520 is about 11922.3537944485. The cubic root of 142142520 is about 521.8848265447.

Adding to 142142520 its reverse (25241241), we get a palindrome (167383761).

The spelling of 142142520 in words is "one hundred forty-two million, one hundred forty-two thousand, five hundred twenty".