142611520 has 56 divisors (see below), whose sum is σ = 342177624. Its totient is φ = 56610816.

The previous prime is 142611517. The next prime is 142611527. The reversal of 142611520 is 25116241.

It can be written as a sum of positive squares in 4 ways, for example, as 62473216 + 80138304 = 7904^2 + 8952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142611491 and 142611500.

It is not an unprimeable number, because it can be changed into a prime (142611527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42214 + ... + 45466.

Almost surely, 2^142611520 is an apocalyptic number.

142611520 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 142611520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171088812).

142611520 is an abundant number, since it is smaller than the sum of its proper divisors (199566104).

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

142611520 is a wasteful number, since it uses less digits than its factorization.

142611520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407 (or 3397 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 142611520 is about 11942.0065315675. The cubic root of 142611520 is about 522.4581836608.

Adding to 142611520 its reverse (25116241), we get a palindrome (167727761).

The spelling of 142611520 in words is "one hundred forty-two million, six hundred eleven thousand, five hundred twenty".