1420285085 has 4 divisors (see below), whose sum is σ = 1704342108. Its totient is φ = 1136228064.

The previous prime is 1420285081. The next prime is 1420285117. The reversal of 1420285085 is 5805820241.

It is a happy number.

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 1056315001 + 363970084 = 32501^2 + 19078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420285085 - 2² = 1420285081 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 (1420285081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142028504 + ... + 142028513.

It is an arithmetic number, because the mean of its divisors is an integer number (426085527).

Almost surely, 2^1420285085 is an apocalyptic number.

It is an amenable number.

1420285085 is a deficient number, since it is larger than the sum of its proper divisors (284057023).

1420285085 is an equidigital number, since it uses as much as digits as its factorization.

1420285085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284057022.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 1420285085 is about 37686.6698581873. The cubic root of 1420285085 is about 1124.0660785800.

The spelling of 1420285085 in words is "one billion, four hundred twenty million, two hundred eighty-five thousand, eighty-five".