1272901281 has 8 divisors (see below), whose sum is σ = 1697368224. Its totient is φ = 848517600.

The previous prime is 1272901241. The next prime is 1272901291. The reversal of 1272901281 is 1821092721.

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

It is not a de Polignac number, because 1272901281 - 2¹⁴ = 1272884897 is a prime.

It is a super-2 number, since 2×1272901281² = 3240555342342881922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272901241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41581 + ... + 65381.

It is an arithmetic number, because the mean of its divisors is an integer number (212171028).

Almost surely, 2^1272901281 is an apocalyptic number.

It is an amenable number.

1272901281 is a deficient number, since it is larger than the sum of its proper divisors (424466943).

1272901281 is a wasteful number, since it uses less digits than its factorization.

1272901281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41631.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1272901281 is about 35677.7420950373. The cubic root of 1272901281 is about 1083.7561488245.

The spelling of 1272901281 in words is "one billion, two hundred seventy-two million, nine hundred one thousand, two hundred eighty-one".