1281255130 has 16 divisors (see below), whose sum is σ = 2306734920. Its totient is φ = 512396352.

The previous prime is 1281255113. The next prime is 1281255149. The reversal of 1281255130 is 315521821.

It can be written as a sum of positive squares in 4 ways, for example, as 449567209 + 831687921 = 21203^2 + 28839^2 .

It is a super-2 number, since 2×1281255130² = 3283229416302633800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 53956 + ... + 73984.

Almost surely, 2^1281255130 is an apocalyptic number.

1281255130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281255130 is a deficient number, since it is larger than the sum of its proper divisors (1025479790).

1281255130 is a wasteful number, since it uses less digits than its factorization.

1281255130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26433.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1281255130 is about 35794.6243170675. The cubic root of 1281255130 is about 1086.1218210136.

Adding to 1281255130 its reverse (315521821), we get a palindrome (1596776951).

The spelling of 1281255130 in words is "one billion, two hundred eighty-one million, two hundred fifty-five thousand, one hundred thirty".