1281403201 has 8 divisors (see below), whose sum is σ = 1382431680. Its totient is φ = 1180726032.

The previous prime is 1281403199. The next prime is 1281403213. The reversal of 1281403201 is 1023041821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1281403201 - 2¹ = 1281403199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1281403231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80221 + ... + 94858.

It is an arithmetic number, because the mean of its divisors is an integer number (172803960).

Almost surely, 2^1281403201 is an apocalyptic number.

It is an amenable number.

1281403201 is a deficient number, since it is larger than the sum of its proper divisors (101028479).

1281403201 is a wasteful number, since it uses less digits than its factorization.

1281403201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175655.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1281403201 is about 35796.6925986187. The cubic root of 1281403201 is about 1086.1636594019.

The spelling of 1281403201 in words is "one billion, two hundred eighty-one million, four hundred three thousand, two hundred one".