142808617 has 16 divisors (see below), whose sum is σ = 175996800. Its totient is φ = 113132160.

The previous prime is 142808597. The next prime is 142808623. The reversal of 142808617 is 716808241.

It is a cyclic number.

It is not a de Polignac number, because 142808617 - 2²⁷ = 8590889 is a prime.

It is a super-3 number, since 3×142808617³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (142808657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7642 + ... + 18547.

It is an arithmetic number, because the mean of its divisors is an integer number (10999800).

Almost surely, 2^142808617 is an apocalyptic number.

It is an amenable number.

142808617 is a deficient number, since it is larger than the sum of its proper divisors (33188183).

142808617 is a wasteful number, since it uses less digits than its factorization.

142808617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26256.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 142808617 is about 11950.2559386818. The cubic root of 142808617 is about 522.6987615561.

The spelling of 142808617 in words is "one hundred forty-two million, eight hundred eight thousand, six hundred seventeen".