142307517 has 16 divisors (see below), whose sum is σ = 208510272. Its totient is φ = 85614720.

The previous prime is 142307497. The next prime is 142307563. The reversal of 142307517 is 715703241.

It is not a de Polignac number, because 142307517 - 2⁸ = 142307261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142307317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11218 + ... + 20259.

It is an arithmetic number, because the mean of its divisors is an integer number (13031892).

Almost surely, 2^142307517 is an apocalyptic number.

It is an amenable number.

142307517 is a deficient number, since it is larger than the sum of its proper divisors (66202755).

142307517 is a wasteful number, since it uses less digits than its factorization.

142307517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31628.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 142307517 is about 11929.2714362613. The cubic root of 142307517 is about 522.0866806041.

The spelling of 142307517 in words is "one hundred forty-two million, three hundred seven thousand, five hundred seventeen".