1286420103 has 16 divisors (see below), whose sum is σ = 1932652800. Its totient is φ = 845533080.

The previous prime is 1286420101. The next prime is 1286420143. The reversal of 1286420103 is 3010246821.

1286420103 is a `hidden beast` number, since 1 + 2 + 8 + 642 + 0 + 10 + 3 = 666.

1286420103 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1286420103 - 2¹ = 1286420101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286420101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333613 + ... + 337446.

It is an arithmetic number, because the mean of its divisors is an integer number (120790800).

Almost surely, 2^1286420103 is an apocalyptic number.

1286420103 is a deficient number, since it is larger than the sum of its proper divisors (646232697).

1286420103 is an equidigital number, since it uses as much as digits as its factorization.

1286420103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671139 (or 671133 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1286420103 is about 35866.6990814599. The cubic root of 1286420103 is about 1087.5793159748.

Adding to 1286420103 its reverse (3010246821), we get a palindrome (4296666924).

The spelling of 1286420103 in words is "one billion, two hundred eighty-six million, four hundred twenty thousand, one hundred three".