1280127652 has 12 divisors (see below), whose sum is σ = 2337624576. Its totient is φ = 612234920.

The previous prime is 1280127637. The next prime is 1280127701. The reversal of 1280127652 is 2567210821.

It is a happy number.

It is a super-3 number, since 3×1280127652³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6957124 + ... + 6957307.

It is an arithmetic number, because the mean of its divisors is an integer number (194802048).

Almost surely, 2^1280127652 is an apocalyptic number.

It is an amenable number.

1280127652 is a deficient number, since it is larger than the sum of its proper divisors (1057496924).

1280127652 is a wasteful number, since it uses less digits than its factorization.

1280127652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13914458 (or 13914456 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1280127652 is about 35778.8715864545. The cubic root of 1280127652 is about 1085.8031392754.

The spelling of 1280127652 in words is "one billion, two hundred eighty million, one hundred twenty-seven thousand, six hundred fifty-two".