142555520 has 64 divisors (see below), whose sum is σ = 342303840. Its totient is φ = 56770560.

The previous prime is 142555519. The next prime is 142555547. The reversal of 142555520 is 25555241.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 225605 + ... + 226235.

Almost surely, 2^142555520 is an apocalyptic number.

142555520 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 142555520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171151920).

142555520 is an abundant number, since it is smaller than the sum of its proper divisors (199748320).

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

142555520 is an equidigital number, since it uses as much as digits as its factorization.

142555520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 142555520 is about 11939.6616367467. The cubic root of 142555520 is about 522.3897892592.

The spelling of 142555520 in words is "one hundred forty-two million, five hundred fifty-five thousand, five hundred twenty".