1271972471 has 8 divisors (see below), whose sum is σ = 1585835904. Its totient is φ = 991147320.

The previous prime is 1271972431. The next prime is 1271972477. The reversal of 1271972471 is 1742791721.

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-1271972471 is a prime.

It is a super-3 number, since 3×1271972471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271972477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8259485 + ... + 8259638.

It is an arithmetic number, because the mean of its divisors is an integer number (198229488).

Almost surely, 2^1271972471 is an apocalyptic number.

1271972471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1271972471 is a deficient number, since it is larger than the sum of its proper divisors (313863433).

1271972471 is a wasteful number, since it uses less digits than its factorization.

1271972471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16519141.

The product of its digits is 49392, while the sum is 41.

The square root of 1271972471 is about 35664.7230607501. The cubic root of 1271972471 is about 1083.4924864611.

The spelling of 1271972471 in words is "one billion, two hundred seventy-one million, nine hundred seventy-two thousand, four hundred seventy-one".