142237520 has 60 divisors (see below), whose sum is σ = 345808596. Its totient is φ = 54405120.

The previous prime is 142237499. The next prime is 142237567. The reversal of 142237520 is 25732241.

142237520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 79637776 + 62599744 = 8924^2 + 7912^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142237520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40640 + ... + 44000.

Almost surely, 2^142237520 is an apocalyptic number.

142237520 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 142237520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172904298).

142237520 is an abundant number, since it is smaller than the sum of its proper divisors (203571076).

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

142237520 is a wasteful number, since it uses less digits than its factorization.

142237520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3391 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 142237520 is about 11926.3372415843. The cubic root of 142237520 is about 522.0010667271.

Adding to 142237520 its reverse (25732241), we get a palindrome (167969761).

The spelling of 142237520 in words is "one hundred forty-two million, two hundred thirty-seven thousand, five hundred twenty".