1291270214 has 16 divisors (see below), whose sum is σ = 2102327808. Its totient is φ = 591276672.

The previous prime is 1291270199. The next prime is 1291270243. The reversal of 1291270214 is 4120721921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192227 + ... + 198830.

It is an arithmetic number, because the mean of its divisors is an integer number (131395488).

Almost surely, 2^1291270214 is an apocalyptic number.

1291270214 is a deficient number, since it is larger than the sum of its proper divisors (811057594).

1291270214 is a wasteful number, since it uses less digits than its factorization.

1291270214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391199.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1291270214 is about 35934.2484824714. The cubic root of 1291270214 is about 1088.9444130780.

The spelling of 1291270214 in words is "one billion, two hundred ninety-one million, two hundred seventy thousand, two hundred fourteen".