142445520 has 160 divisors (see below), whose sum is σ = 560797440. Its totient is φ = 32555520.

The previous prime is 142445507. The next prime is 142445549. The reversal of 142445520 is 25544241.

142445520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10410 + ... + 19830.

It is an arithmetic number, because the mean of its divisors is an integer number (3504984).

Almost surely, 2^142445520 is an apocalyptic number.

142445520 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 142445520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280398720).

142445520 is an abundant number, since it is smaller than the sum of its proper divisors (418351920).

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

142445520 is a wasteful number, since it uses less digits than its factorization.

142445520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9450 (or 9438 counting only the distinct ones).

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

The square root of 142445520 is about 11935.0542520761. The cubic root of 142445520 is about 522.2553909486.

Adding to 142445520 its reverse (25544241), we get a palindrome (167989761).

The spelling of 142445520 in words is "one hundred forty-two million, four hundred forty-five thousand, five hundred twenty".