142215085 has 4 divisors (see below), whose sum is σ = 170658108. Its totient is φ = 113772064.

The previous prime is 142215083. The next prime is 142215103. The reversal of 142215085 is 580512241.

142215085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95511529 + 46703556 = 9773^2 + 6834^2 .

It is a cyclic number.

It is not a de Polignac number, because 142215085 - 2¹ = 142215083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142215083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14221504 + ... + 14221513.

It is an arithmetic number, because the mean of its divisors is an integer number (42664527).

Almost surely, 2^142215085 is an apocalyptic number.

It is an amenable number.

142215085 is a deficient number, since it is larger than the sum of its proper divisors (28443023).

142215085 is an equidigital number, since it uses as much as digits as its factorization.

142215085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28443022.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 142215085 is about 11925.3966391060. The cubic root of 142215085 is about 521.9736203597.

It can be divided in two parts, 14221 and 5085, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 142215085 in words is "one hundred forty-two million, two hundred fifteen thousand, eighty-five".