1271451902 has 24 divisors (see below), whose sum is σ = 2272672080. Its totient is φ = 531615840.

The previous prime is 1271451817. The next prime is 1271451941. The reversal of 1271451902 is 2091541721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154202 + ... + 162237.

It is an arithmetic number, because the mean of its divisors is an integer number (94694670).

Almost surely, 2^1271451902 is an apocalyptic number.

1271451902 is a deficient number, since it is larger than the sum of its proper divisors (1001220178).

1271451902 is a wasteful number, since it uses less digits than its factorization.

1271451902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316496 (or 316489 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1271451902 is about 35657.4242199293. The cubic root of 1271451902 is about 1083.3446558080.

The spelling of 1271451902 in words is "one billion, two hundred seventy-one million, four hundred fifty-one thousand, nine hundred two".