142855387 has 2 divisors, whose sum is σ = 142855388. Its totient is φ = 142855386.

The previous prime is 142855283. The next prime is 142855393. The reversal of 142855387 is 783558241.

142855387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142855387 - 2⁷ = 142855259 is a prime.

It is a super-3 number, since 3×142855387³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (142855397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71427693 + 71427694.

It is an arithmetic number, because the mean of its divisors is an integer number (71427694).

Almost surely, 2^142855387 is an apocalyptic number.

142855387 is a deficient number, since it is larger than the sum of its proper divisors (1).

142855387 is an equidigital number, since it uses as much as digits as its factorization.

142855387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 43.

The square root of 142855387 is about 11952.2126403440. The cubic root of 142855387 is about 522.7558168266.

The spelling of 142855387 in words is "one hundred forty-two million, eight hundred fifty-five thousand, three hundred eighty-seven".