142417 has 8 divisors (see below), whose sum is σ = 158112. Its totient is φ = 128260.

The previous prime is 142403. The next prime is 142421. The reversal of 142417 is 714241.

Adding to 142417 its reverse (714241), we get a palindrome (856658).

It can be divided in two parts, 1424 and 17, that added together give a palindrome (1441).

142417 = 49^{2} + 50^{2} + ... + 81^{2}.

It is a de Polignac number, because none of the positive numbers 2^{k}-142417 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to *n*+sod(*n*) for *n* = 142394 and 142403.

It is not an unprimeable number, because it can be changed into a prime (142427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278 + ... + 1384.

It is an arithmetic number, because the mean of its divisors is an integer number (19764).

2^{142417} is an apocalyptic number.

It is an amenable number.

142417 is a deficient number, since it is larger than the sum of its proper divisors (15695).

142417 is an equidigital number, since it uses as much as digits as its factorization.

142417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 118 counting only the distinct ones).

The product of its digits is 224, while the sum is 19.

The square root of 142417 is about 377.3817695650. The cubic root of 142417 is about 52.2220533838. Note that the first 3 decimals are identical.

The spelling of 142417 in words is "one hundred forty-two thousand, four hundred seventeen", and thus it is an iban number.

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