1276234478 has 16 divisors (see below), whose sum is σ = 1934499840. Its totient is φ = 631411416.

The previous prime is 1276234471. The next prime is 1276234481. The reversal of 1276234478 is 8744326721.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1276234471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459851 + ... + 462617.

It is an arithmetic number, because the mean of its divisors is an integer number (120906240).

Almost surely, 2^1276234478 is an apocalyptic number.

1276234478 is a deficient number, since it is larger than the sum of its proper divisors (658265362).

1276234478 is a wasteful number, since it uses less digits than its factorization.

1276234478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111.

The product of its digits is 451584, while the sum is 44.

The square root of 1276234478 is about 35724.4241101239. The cubic root of 1276234478 is about 1084.7012926149.

The spelling of 1276234478 in words is "one billion, two hundred seventy-six million, two hundred thirty-four thousand, four hundred seventy-eight".