122783044 has 12 divisors (see below), whose sum is σ = 227509884. Its totient is φ = 57780224.

The previous prime is 122782991. The next prime is 122783047. The reversal of 122783044 is 440387221.

It can be written as a sum of positive squares in 2 ways, for example, as 90973444 + 31809600 = 9538^2 + 5640^2 .

It is a junction number, because it is equal to n+sod(n) for n = 122782997 and 122783015.

It is not an unprimeable number, because it can be changed into a prime (122783047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902749 + ... + 902884.

It is an arithmetic number, because the mean of its divisors is an integer number (18959157).

Almost surely, 2^122783044 is an apocalyptic number.

It is an amenable number.

122783044 is a deficient number, since it is larger than the sum of its proper divisors (104726840).

122783044 is a wasteful number, since it uses less digits than its factorization.

122783044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805654 (or 1805652 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 122783044 is about 11080.7510575773. The cubic root of 122783044 is about 497.0264092403.

The spelling of 122783044 in words is "one hundred twenty-two million, seven hundred eighty-three thousand, forty-four".