1281407106 has 32 divisors (see below), whose sum is σ = 2969059968. Its totient is φ = 361100160.

The previous prime is 1281407089. The next prime is 1281407117. The reversal of 1281407106 is 6017041821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205905 + ... + 212036.

It is an arithmetic number, because the mean of its divisors is an integer number (92783124).

Almost surely, 2^1281407106 is an apocalyptic number.

1281407106 is an abundant number, since it is smaller than the sum of its proper divisors (1687652862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1281407106 is a wasteful number, since it uses less digits than its factorization.

1281407106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418026.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1281407106 is about 35796.7471427223. The cubic root of 1281407106 is about 1086.1647627405.

Adding to 1281407106 its reverse (6017041821), we get a palindrome (7298448927).

The spelling of 1281407106 in words is "one billion, two hundred eighty-one million, four hundred seven thousand, one hundred six".