142361185 has 12 divisors (see below), whose sum is σ = 172958292. Its totient is φ = 112489568.

The previous prime is 142361173. The next prime is 142361201. The reversal of 142361185 is 581163241.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 63489024 = 8881^2 + 7968^2 .

It is not a de Polignac number, because 142361185 - 2⁷ = 142361057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32379 + ... + 36511.

It is an arithmetic number, because the mean of its divisors is an integer number (14413191).

Almost surely, 2^142361185 is an apocalyptic number.

142361185 is the 6889-th octagonal number.

It is an amenable number.

142361185 is a deficient number, since it is larger than the sum of its proper divisors (30597107).

142361185 is an frugal number, since it uses more digits than its factorization.

142361185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304 (or 4221 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 142361185 is about 11931.5206491042. The cubic root of 142361185 is about 522.1523033414.

The spelling of 142361185 in words is "one hundred forty-two million, three hundred sixty-one thousand, one hundred eighty-five".