142860385 has 4 divisors (see below), whose sum is σ = 171432468. Its totient is φ = 114288304.

The previous prime is 142860379. The next prime is 142860391. The reversal of 142860385 is 583068241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (142860379) and next prime (142860391).

It can be written as a sum of positive squares in 2 ways, for example, as 109579024 + 33281361 = 10468^2 + 5769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142860385 is a prime.

It is a Duffinian 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, 14286034 + ... + 14286043.

It is an arithmetic number, because the mean of its divisors is an integer number (42858117).

Almost surely, 2^142860385 is an apocalyptic number.

It is an amenable number.

142860385 is a deficient number, since it is larger than the sum of its proper divisors (28572083).

142860385 is an equidigital number, since it uses as much as digits as its factorization.

142860385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28572082.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 142860385 is about 11952.4217211409. The cubic root of 142860385 is about 522.7619132088.

The spelling of 142860385 in words is "one hundred forty-two million, eight hundred sixty thousand, three hundred eighty-five".