851223126 has 16 divisors (see below), whose sum is σ = 1833403824. Its totient is φ = 261914784.

The previous prime is 851223091. The next prime is 851223127. The reversal of 851223126 is 621322158.

851223126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 851223093 and 851223102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851223127) 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, 5456481 + ... + 5456636.

It is an arithmetic number, because the mean of its divisors is an integer number (114587739).

Almost surely, 2^851223126 is an apocalyptic number.

851223126 is an abundant number, since it is smaller than the sum of its proper divisors (982180698).

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

851223126 is a wasteful number, since it uses less digits than its factorization.

851223126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10913135.

The product of its digits is 5760, while the sum is 30.

The square root of 851223126 is about 29175.7283713706. The cubic root of 851223126 is about 947.7223835032.

The spelling of 851223126 in words is "eight hundred fifty-one million, two hundred twenty-three thousand, one hundred twenty-six".