1204122129 has 12 divisors (see below), whose sum is σ = 1867618224. Its totient is φ = 688069704.

The previous prime is 1204122107. The next prime is 1204122133. The reversal of 1204122129 is 9212214021.

It is not a de Polignac number, because 1204122129 - 2⁵ = 1204122097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1204122099 and 1204122108.

It is not an unprimeable number, because it can be changed into a prime (1204122629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4095507 + ... + 4095800.

It is an arithmetic number, because the mean of its divisors is an integer number (155634852).

Almost surely, 2^1204122129 is an apocalyptic number.

It is an amenable number.

1204122129 is a deficient number, since it is larger than the sum of its proper divisors (663496095).

1204122129 is an equidigital number, since it uses as much as digits as its factorization.

1204122129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8191324 (or 8191317 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1204122129 is about 34700.4629508023. The cubic root of 1204122129 is about 1063.8739607166.

The spelling of 1204122129 in words is "one billion, two hundred four million, one hundred twenty-two thousand, one hundred twenty-nine".