1271412400 has 60 divisors (see below), whose sum is σ = 3187398672. Its totient is φ = 486449920.

The previous prime is 1271412391. The next prime is 1271412409. The reversal of 1271412400 is 42141721.

It is an interprime number because it is at equal distance from previous prime (1271412391) and next prime (1271412409).

It is not an unprimeable number, because it can be changed into a prime (1271412409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59899 + ... + 78298.

Almost surely, 2^1271412400 is an apocalyptic number.

1271412400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271412400 is an abundant number, since it is smaller than the sum of its proper divisors (1915986272).

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

1271412400 is a wasteful number, since it uses less digits than its factorization.

1271412400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138238 (or 138227 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1271412400 is about 35656.8703057349. The cubic root of 1271412400 is about 1083.3334364234. Note that the first 3 decimals are identical.

The spelling of 1271412400 in words is "one billion, two hundred seventy-one million, four hundred twelve thousand, four hundred".