1281124005130 has 32 divisors (see below), whose sum is σ = 2324704309200. Its totient is φ = 508314888192.

The previous prime is 1281124005023. The next prime is 1281124005137. The reversal of 1281124005130 is 315004211821.

It can be written as a sum of positive squares in 8 ways, for example, as 807685056369 + 473438948761 = 898713^2 + 688069^2 .

It is not an unprimeable number, because it can be changed into a prime (1281124005137) 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, 423847 + ... + 1655866.

Almost surely, 2^{1281124005130} is an apocalyptic number.

1281124005130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281124005130 is a deficient number, since it is larger than the sum of its proper divisors (1043580304070).

1281124005130 is a wasteful number, since it uses less digits than its factorization.

1281124005130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080218.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 1281124005130 its reverse (315004211821), we get a palindrome (1596128216951).

The spelling of 1281124005130 in words is "one trillion, two hundred eighty-one billion, one hundred twenty-four million, five thousand, one hundred thirty".