142003520 has 28 divisors (see below), whose sum is σ = 338146644. Its totient is φ = 56801280.

The previous prime is 142003513. The next prime is 142003531. The reversal of 142003520 is 25300241.

It can be written as a sum of positive squares in 2 ways, for example, as 60715264 + 81288256 = 7792^2 + 9016^2 .

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, 221561 + ... + 222200.

Almost surely, 2^142003520 is an apocalyptic number.

142003520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142003520 is an abundant number, since it is smaller than the sum of its proper divisors (196143124).

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

142003520 is an equidigital number, since it uses as much as digits as its factorization.

142003520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443778 (or 443768 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 142003520 is about 11916.5229828168. The cubic root of 142003520 is about 521.7146554380.

Adding to 142003520 its reverse (25300241), we get a palindrome (167303761).

The spelling of 142003520 in words is "one hundred forty-two million, three thousand, five hundred twenty".