1278421314 has 32 divisors (see below), whose sum is σ = 2603166336. Its totient is φ = 418467840.

The previous prime is 1278421303. The next prime is 1278421343. The reversal of 1278421314 is 4131248721.

It is a super-2 number, since 2×1278421314² = 3268722112178973192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103644 + ... + 115320.

It is an arithmetic number, because the mean of its divisors is an integer number (81348948).

Almost surely, 2^1278421314 is an apocalyptic number.

1278421314 is an abundant number, since it is smaller than the sum of its proper divisors (1324745022).

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

1278421314 is a wasteful number, since it uses less digits than its factorization.

1278421314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12010.

The product of its digits is 10752, while the sum is 33.

The square root of 1278421314 is about 35755.0180254464. The cubic root of 1278421314 is about 1085.3204866361.

The spelling of 1278421314 in words is "one billion, two hundred seventy-eight million, four hundred twenty-one thousand, three hundred fourteen".