1420142065 has 4 divisors (see below), whose sum is σ = 1704170484. Its totient is φ = 1136113648.

The previous prime is 1420142047. The next prime is 1420142069. The reversal of 1420142065 is 5602410241.

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 273439296 + 1146702769 = 16536^2 + 33863^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420142065 - 2⁵ = 1420142033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1420142069) 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, 142014202 + ... + 142014211.

It is an arithmetic number, because the mean of its divisors is an integer number (426042621).

Almost surely, 2^1420142065 is an apocalyptic number.

It is an amenable number.

1420142065 is a deficient number, since it is larger than the sum of its proper divisors (284028419).

1420142065 is an equidigital number, since it uses as much as digits as its factorization.

1420142065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284028418.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1420142065 is about 37684.7723225178. The cubic root of 1420142065 is about 1124.0283468765.

The spelling of 1420142065 in words is "one billion, four hundred twenty million, one hundred forty-two thousand, sixty-five".