122811793 has 6 divisors (see below), whose sum is σ = 132985734. Its totient is φ = 113364576.

The previous prime is 122811751. The next prime is 122811809. The reversal of 122811793 is 397118221.

It can be written as a sum of positive squares in 3 ways, for example, as 15233409 + 107578384 = 3903^2 + 10372^2 .

It is not a de Polignac number, because 122811793 - 2²¹ = 120714641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122821793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 363180 + ... + 363517.

It is an arithmetic number, because the mean of its divisors is an integer number (22164289).

Almost surely, 2^122811793 is an apocalyptic number.

122811793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122811793 is a deficient number, since it is larger than the sum of its proper divisors (10173941).

122811793 is an equidigital number, since it uses as much as digits as its factorization.

122811793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726723 (or 726710 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 122811793 is about 11082.0482312612. The cubic root of 122811793 is about 497.0651982475.

The spelling of 122811793 in words is "one hundred twenty-two million, eight hundred eleven thousand, seven hundred ninety-three".