1278342214 has 16 divisors (see below), whose sum is σ = 1984817520. Its totient is φ = 616762720.

The previous prime is 1278342113. The next prime is 1278342223. The reversal of 1278342214 is 4122438721.

It is a self number, because there is not a number n which added to its sum of digits gives 1278342214.

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, 108849 + ... + 120019.

It is an arithmetic number, because the mean of its divisors is an integer number (124051095).

Almost surely, 2^1278342214 is an apocalyptic number.

1278342214 is a deficient number, since it is larger than the sum of its proper divisors (706475306).

1278342214 is a wasteful number, since it uses less digits than its factorization.

1278342214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175.

The product of its digits is 21504, while the sum is 34.

The square root of 1278342214 is about 35753.9118698919. The cubic root of 1278342214 is about 1085.2981020956.

The spelling of 1278342214 in words is "one billion, two hundred seventy-eight million, three hundred forty-two thousand, two hundred fourteen".