1200949271 has 8 divisors (see below), whose sum is σ = 1212457344. Its totient is φ = 1189492920.

The previous prime is 1200949259. The next prime is 1200949291. The reversal of 1200949271 is 1729490021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200949271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200949201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34556 + ... + 59966.

It is an arithmetic number, because the mean of its divisors is an integer number (151557168).

Almost surely, 2^1200949271 is an apocalyptic number.

1200949271 is a deficient number, since it is larger than the sum of its proper divisors (11508073).

1200949271 is a wasteful number, since it uses less digits than its factorization.

1200949271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25861.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 1200949271 is about 34654.7149894498. The cubic root of 1200949271 is about 1062.9387039286.

The spelling of 1200949271 in words is "one billion, two hundred million, nine hundred forty-nine thousand, two hundred seventy-one".