142847617 has 16 divisors (see below), whose sum is σ = 168521472. Its totient is φ = 119614720.

The previous prime is 142847611. The next prime is 142847629. The reversal of 142847617 is 716748241.

It is a happy number.

It is not a de Polignac number, because 142847617 - 2³ = 142847609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142847617.

It is not an unprimeable number, because it can be changed into a prime (142847611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663 + ... + 16915.

It is an arithmetic number, because the mean of its divisors is an integer number (10532592).

Almost surely, 2^142847617 is an apocalyptic number.

142847617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142847617 is a deficient number, since it is larger than the sum of its proper divisors (25673855).

142847617 is a wasteful number, since it uses less digits than its factorization.

142847617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16328.

The product of its digits is 75264, while the sum is 40.

The square root of 142847617 is about 11951.8875915062. The cubic root of 142847617 is about 522.7463389753.

The spelling of 142847617 in words is "one hundred forty-two million, eight hundred forty-seven thousand, six hundred seventeen".