142871417 has 18 divisors (see below), whose sum is σ = 164545182. Its totient is φ = 123566976.

The previous prime is 142871401. The next prime is 142871419. The reversal of 142871417 is 714178241.

It can be written as a sum of positive squares in 3 ways, for example, as 3182656 + 139688761 = 1784^2 + 11819^2 .

It is not a de Polignac number, because 142871417 - 2⁴ = 142871401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142871419) 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 17 ways as a sum of consecutive naturals, for example, 640568 + ... + 640790.

It is an arithmetic number, because the mean of its divisors is an integer number (9141399).

Almost surely, 2^142871417 is an apocalyptic number.

142871417 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

142871417 is a deficient number, since it is larger than the sum of its proper divisors (21673765).

142871417 is an equidigital number, since it uses as much as digits as its factorization.

142871417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 253 counting only the distinct ones).

The product of its digits is 12544, while the sum is 35.

The square root of 142871417 is about 11952.8832086656. The cubic root of 142871417 is about 522.7753691457.

The spelling of 142871417 in words is "one hundred forty-two million, eight hundred seventy-one thousand, four hundred seventeen".