142517087 has 4 divisors (see below), whose sum is σ = 142839240. Its totient is φ = 142194936.

The previous prime is 142517077. The next prime is 142517101. The reversal of 142517087 is 780715241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780715241 = 3671 ⋅212671.

It is a cyclic number.

It is not a de Polignac number, because 142517087 - 2⁴ = 142517071 is a prime.

It is a super-2 number, since 2×142517087² = 40622240173931138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142517077) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 160412 + ... + 161297.

It is an arithmetic number, because the mean of its divisors is an integer number (35709810).

Almost surely, 2^142517087 is an apocalyptic number.

142517087 is a deficient number, since it is larger than the sum of its proper divisors (322153).

142517087 is an equidigital number, since it uses as much as digits as its factorization.

142517087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322152.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 142517087 is about 11938.0520605332. The cubic root of 142517087 is about 522.3428395718.

The spelling of 142517087 in words is "one hundred forty-two million, five hundred seventeen thousand, eighty-seven".