1280143352 has 8 divisors (see below), whose sum is σ = 2400268800. Its totient is φ = 640071672.

The previous prime is 1280143349. The next prime is 1280143379. The reversal of 1280143352 is 2533410821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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, 80008952 + ... + 80008967.

It is an arithmetic number, because the mean of its divisors is an integer number (300033600).

Almost surely, 2^1280143352 is an apocalyptic number.

It is an amenable number.

1280143352 is a deficient number, since it is larger than the sum of its proper divisors (1120125448).

1280143352 is a wasteful number, since it uses less digits than its factorization.

1280143352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160017925 (or 160017921 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1280143352 is about 35779.0909890120. The cubic root of 1280143352 is about 1085.8075781660.

The spelling of 1280143352 in words is "one billion, two hundred eighty million, one hundred forty-three thousand, three hundred fifty-two".