142008505 has 8 divisors (see below), whose sum is σ = 176286600. Its totient is φ = 109689216.

The previous prime is 142008499. The next prime is 142008511. The reversal of 142008505 is 505800241.

142008505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142008499) and next prime (142008511).

It can be written as a sum of positive squares in 4 ways, for example, as 802816 + 141205689 = 896^2 + 11883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142008505 - 2¹⁷ = 141877433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142008505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489540 + ... + 489829.

It is an arithmetic number, because the mean of its divisors is an integer number (22035825).

Almost surely, 2^142008505 is an apocalyptic number.

It is an amenable number.

142008505 is a deficient number, since it is larger than the sum of its proper divisors (34278095).

142008505 is an equidigital number, since it uses as much as digits as its factorization.

142008505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979403.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 142008505 is about 11916.7321443423. The cubic root of 142008505 is about 521.7207602565.

Adding to 142008505 its reverse (505800241), we get a palindrome (647808746).

The spelling of 142008505 in words is "one hundred forty-two million, eight thousand, five hundred five".