142859965 has 4 divisors (see below), whose sum is σ = 171431964. Its totient is φ = 114287968.

The previous prime is 142859957. The next prime is 142859999. The reversal of 142859965 is 569958241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569958241 = 139 ⋅4100419.

It can be written as a sum of positive squares in 2 ways, for example, as 45522009 + 97337956 = 6747^2 + 9866^2 .

It is a cyclic number.

It is not a de Polignac number, because 142859965 - 2³ = 142859957 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14285992 + ... + 14286001.

It is an arithmetic number, because the mean of its divisors is an integer number (42857991).

Almost surely, 2^142859965 is an apocalyptic number.

It is an amenable number.

142859965 is a deficient number, since it is larger than the sum of its proper divisors (28571999).

142859965 is an equidigital number, since it uses as much as digits as its factorization.

142859965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28571998.

The product of its digits is 777600, while the sum is 49.

The square root of 142859965 is about 11952.4041514668. The cubic root of 142859965 is about 522.7614009132.

The spelling of 142859965 in words is "one hundred forty-two million, eight hundred fifty-nine thousand, nine hundred sixty-five".