1427242165 has 4 divisors (see below), whose sum is σ = 1712690604. Its totient is φ = 1141793728.

The previous prime is 1427242153. The next prime is 1427242183. The reversal of 1427242165 is 5612427241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5612427241 = 71 ⋅79048271.

It can be written as a sum of positive squares in 2 ways, for example, as 915849169 + 511392996 = 30263^2 + 22614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1427242165 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1427242165.

It is a congruent number.

It is an unprimeable number.

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, 142724212 + ... + 142724221.

It is an arithmetic number, because the mean of its divisors is an integer number (428172651).

Almost surely, 2^1427242165 is an apocalyptic number.

It is an amenable number.

1427242165 is a deficient number, since it is larger than the sum of its proper divisors (285448439).

1427242165 is an equidigital number, since it uses as much as digits as its factorization.

1427242165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285448438.

The product of its digits is 26880, while the sum is 34.

The square root of 1427242165 is about 37778.8587043071. The cubic root of 1427242165 is about 1125.8984533104.

The spelling of 1427242165 in words is "one billion, four hundred twenty-seven million, two hundred forty-two thousand, one hundred sixty-five".