1284498427 has 4 divisors (see below), whose sum is σ = 1360057176. Its totient is φ = 1208939680.

The previous prime is 1284498419. The next prime is 1284498433. The reversal of 1284498427 is 7248944821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7248944821 = 61 ⋅118835161.

It is a cyclic number.

It is not a de Polignac number, because 1284498427 - 2³ = 1284498419 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1284498487) 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, 37779349 + ... + 37779382.

It is an arithmetic number, because the mean of its divisors is an integer number (340014294).

Almost surely, 2^1284498427 is an apocalyptic number.

1284498427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1284498427 is a deficient number, since it is larger than the sum of its proper divisors (75558749).

1284498427 is an equidigital number, since it uses as much as digits as its factorization.

1284498427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75558748.

The product of its digits is 1032192, while the sum is 49.

The square root of 1284498427 is about 35839.8999301058. The cubic root of 1284498427 is about 1087.0374979976.

The spelling of 1284498427 in words is "one billion, two hundred eighty-four million, four hundred ninety-eight thousand, four hundred twenty-seven".