142418517 has 4 divisors (see below), whose sum is σ = 189891360. Its totient is φ = 94945676.

The previous prime is 142418489. The next prime is 142418569. The reversal of 142418517 is 715814241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142418517 - 2⁶ = 142418453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142418117) 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 3 ways as a sum of consecutive naturals, for example, 23736417 + ... + 23736422.

It is an arithmetic number, because the mean of its divisors is an integer number (47472840).

Almost surely, 2^142418517 is an apocalyptic number.

It is an amenable number.

142418517 is a deficient number, since it is larger than the sum of its proper divisors (47472843).

142418517 is an equidigital number, since it uses as much as digits as its factorization.

142418517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47472842.

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

The square root of 142418517 is about 11933.9229509831. The cubic root of 142418517 is about 522.2223880304. Note that the first 3 decimals are identical.

The spelling of 142418517 in words is "one hundred forty-two million, four hundred eighteen thousand, five hundred seventeen".