142113520 has 20 divisors (see below), whose sum is σ = 330414120. Its totient is φ = 56845376.

The previous prime is 142113473. The next prime is 142113541. The reversal of 142113520 is 25311241.

142113520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888130 + ... + 888289.

It is an arithmetic number, because the mean of its divisors is an integer number (16520706).

Almost surely, 2^142113520 is an apocalyptic number.

142113520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142113520 is an abundant number, since it is smaller than the sum of its proper divisors (188300600).

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

142113520 is a wasteful number, since it uses less digits than its factorization.

142113520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776432 (or 1776426 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 142113520 is about 11921.1375296152. The cubic root of 142113520 is about 521.8493323817.

Adding to 142113520 its reverse (25311241), we get a palindrome (167424761).

It can be divided in two parts, 1421 and 13520, that added together give a palindrome (14941).

The spelling of 142113520 in words is "one hundred forty-two million, one hundred thirteen thousand, five hundred twenty".