1281245332 has 6 divisors (see below), whose sum is σ = 2242179338. Its totient is φ = 640622664.

The previous prime is 1281245327. The next prime is 1281245347. The reversal of 1281245332 is 2335421821.

It can be written as a sum of positive squares in only one way, i.e., 897242116 + 384003216 = 29954^2 + 19596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1281245294 and 1281245303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160155663 + ... + 160155670.

Almost surely, 2^1281245332 is an apocalyptic number.

It is an amenable number.

1281245332 is a deficient number, since it is larger than the sum of its proper divisors (960934006).

1281245332 is a wasteful number, since it uses less digits than its factorization.

1281245332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320311337 (or 320311335 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 1281245332 is about 35794.4874526791. The cubic root of 1281245332 is about 1086.1190524136.

The spelling of 1281245332 in words is "one billion, two hundred eighty-one million, two hundred forty-five thousand, three hundred thirty-two".