142534505 has 8 divisors (see below), whose sum is σ = 171660552. Its totient is φ = 113614848.

The previous prime is 142534499. The next prime is 142534517. The reversal of 142534505 is 505435241.

It can be written as a sum of positive squares in 4 ways, for example, as 1590121 + 140944384 = 1261^2 + 11872^2 .

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 142534505 - 2¹⁰ = 142533481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50072 + ... + 52841.

It is an arithmetic number, because the mean of its divisors is an integer number (21457569).

Almost surely, 2^142534505 is an apocalyptic number.

It is an amenable number.

142534505 is a deficient number, since it is larger than the sum of its proper divisors (29126047).

142534505 is a wasteful number, since it uses less digits than its factorization.

142534505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103195.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 142534505 is about 11938.7815542458. The cubic root of 142534505 is about 522.3641184167.

Adding to 142534505 its reverse (505435241), we get a palindrome (647969746).

The spelling of 142534505 in words is "one hundred forty-two million, five hundred thirty-four thousand, five hundred five".