142841517 has 24 divisors (see below), whose sum is σ = 238595616. Its totient is φ = 75343968.

The previous prime is 142841513. The next prime is 142841527. The reversal of 142841517 is 715148241.

It is not a de Polignac number, because 142841517 - 2² = 142841513 is a prime.

It is a super-2 number, since 2×142841517² = 40807397957722578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142841513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35463 + ... + 39284.

It is an arithmetic number, because the mean of its divisors is an integer number (9941484).

Almost surely, 2^142841517 is an apocalyptic number.

It is an amenable number.

142841517 is a deficient number, since it is larger than the sum of its proper divisors (95754099).

142841517 is a wasteful number, since it uses less digits than its factorization.

142841517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74777 (or 74770 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 142841517 is about 11951.6323989654. The cubic root of 142841517 is about 522.7388979503.

Adding to 142841517 its reverse (715148241), we get a palindrome (857989758).

The spelling of 142841517 in words is "one hundred forty-two million, eight hundred forty-one thousand, five hundred seventeen".