1271875320 has 96 divisors (see below), whose sum is σ = 4139132400. Its totient is φ = 338712576.

The previous prime is 1271875313. The next prime is 1271875337. The reversal of 1271875320 is 235781721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 332539 + ... + 336341.

Almost surely, 2^1271875320 is an apocalyptic number.

1271875320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271875320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2069566200).

1271875320 is an abundant number, since it is smaller than the sum of its proper divisors (2867257080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271875320 is a wasteful number, since it uses less digits than its factorization.

1271875320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749 (or 4742 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1271875320 is about 35663.3610306152. The cubic root of 1271875320 is about 1083.4649006810.

The spelling of 1271875320 in words is "one billion, two hundred seventy-one million, eight hundred seventy-five thousand, three hundred twenty".