122827129 has 4 divisors (see below), whose sum is σ = 125144676. Its totient is φ = 120509584.

The previous prime is 122827079. The next prime is 122827141. The reversal of 122827129 is 921728221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 921728221 = 569 ⋅1619909.

It can be written as a sum of positive squares in 2 ways, for example, as 69755904 + 53071225 = 8352^2 + 7285^2 .

It is a cyclic number.

It is not a de Polignac number, because 122827129 - 2¹¹ = 122825081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122827094 and 122827103.

It is not an unprimeable number, because it can be changed into a prime (122827169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158694 + ... + 1158799.

It is an arithmetic number, because the mean of its divisors is an integer number (31286169).

Almost surely, 2^122827129 is an apocalyptic number.

It is an amenable number.

122827129 is a deficient number, since it is larger than the sum of its proper divisors (2317547).

122827129 is an equidigital number, since it uses as much as digits as its factorization.

122827129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317546.

The product of its digits is 8064, while the sum is 34.

The square root of 122827129 is about 11082.7401395142. The cubic root of 122827129 is about 497.0858875598.

The spelling of 122827129 in words is "one hundred twenty-two million, eight hundred twenty-seven thousand, one hundred twenty-nine".