1286425406 has 16 divisors (see below), whose sum is σ = 2210334720. Its totient is φ = 550066680.

The previous prime is 1286425403. The next prime is 1286425409. The reversal of 1286425406 is 6045246821.

It is an interprime number because it is at equal distance from previous prime (1286425403) and next prime (1286425409).

It is a self number, because there is not a number n which added to its sum of digits gives 1286425406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286425403) 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 7 ways as a sum of consecutive naturals, for example, 98510 + ... + 110801.

It is an arithmetic number, because the mean of its divisors is an integer number (138145920).

Almost surely, 2^1286425406 is an apocalyptic number.

1286425406 is a deficient number, since it is larger than the sum of its proper divisors (923909314).

1286425406 is a wasteful number, since it uses less digits than its factorization.

1286425406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209759.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 1286425406 is about 35866.7730078969. The cubic root of 1286425406 is about 1087.5808104128.

The spelling of 1286425406 in words is "one billion, two hundred eighty-six million, four hundred twenty-five thousand, four hundred six".