1226042878 has 8 divisors (see below), whose sum is σ = 1888768872. Its totient is φ = 596453256.

The previous prime is 1226042863. The next prime is 1226042879. The reversal of 1226042878 is 8782406221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1226042878² = 3006362277389045768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226042878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226042879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8284000 + ... + 8284147.

It is an arithmetic number, because the mean of its divisors is an integer number (236096109).

Almost surely, 2^1226042878 is an apocalyptic number.

1226042878 is a deficient number, since it is larger than the sum of its proper divisors (662725994).

1226042878 is a wasteful number, since it uses less digits than its factorization.

1226042878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16568186.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 1226042878 is about 35014.8950876623. The cubic root of 1226042878 is about 1070.2910315575.

The spelling of 1226042878 in words is "one billion, two hundred twenty-six million, forty-two thousand, eight hundred seventy-eight".