142540717 has 16 divisors (see below), whose sum is σ = 165211200. Its totient is φ = 121616640.

The previous prime is 142540711. The next prime is 142540721. The reversal of 142540717 is 717045241.

It is a cyclic number.

It is not a de Polignac number, because 142540717 - 2¹⁵ = 142507949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142540711) 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, 19653 + ... + 25909.

It is an arithmetic number, because the mean of its divisors is an integer number (10325700).

Almost surely, 2^142540717 is an apocalyptic number.

It is an amenable number.

142540717 is a deficient number, since it is larger than the sum of its proper divisors (22670483).

142540717 is a wasteful number, since it uses less digits than its factorization.

142540717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 142540717 is about 11939.0417119633. The cubic root of 142540717 is about 522.3717069389.

Adding to 142540717 its reverse (717045241), we get a palindrome (859585958).

The spelling of 142540717 in words is "one hundred forty-two million, five hundred forty thousand, seven hundred seventeen".