1128129407 has 2 divisors, whose sum is σ = 1128129408. Its totient is φ = 1128129406.

The previous prime is 1128129397. The next prime is 1128129449. The reversal of 1128129407 is 7049218211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128129407 - 2⁸ = 1128129151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128129487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564064703 + 564064704.

It is an arithmetic number, because the mean of its divisors is an integer number (564064704).

Almost surely, 2^1128129407 is an apocalyptic number.

1128129407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128129407 is an equidigital number, since it uses as much as digits as its factorization.

1128129407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1128129407 is about 33587.6377109198. The cubic root of 1128129407 is about 1041.0053785538.

The spelling of 1128129407 in words is "one billion, one hundred twenty-eight million, one hundred twenty-nine thousand, four hundred seven".