1226856142 has 16 divisors (see below), whose sum is σ = 1867361040. Its totient is φ = 604465792.

The previous prime is 1226856139. The next prime is 1226856173. The reversal of 1226856142 is 2416586221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23409 + ... + 54787.

It is an arithmetic number, because the mean of its divisors is an integer number (116710065).

Almost surely, 2^1226856142 is an apocalyptic number.

1226856142 is a deficient number, since it is larger than the sum of its proper divisors (640504898).

1226856142 is a wasteful number, since it uses less digits than its factorization.

1226856142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31667.

The product of its digits is 46080, while the sum is 37.

The square root of 1226856142 is about 35026.5062773894. The cubic root of 1226856142 is about 1070.5276292581.

The spelling of 1226856142 in words is "one billion, two hundred twenty-six million, eight hundred fifty-six thousand, one hundred forty-two".