1264211129 has 2 divisors, whose sum is σ = 1264211130. Its totient is φ = 1264211128.

The previous prime is 1264211111. The next prime is 1264211147. The reversal of 1264211129 is 9211124621.

It is a balanced prime because it is at equal distance from previous prime (1264211111) and next prime (1264211147).

It can be written as a sum of positive squares in only one way, i.e., 891141904 + 373069225 = 29852^2 + 19315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264211129 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264211329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632105564 + 632105565.

It is an arithmetic number, because the mean of its divisors is an integer number (632105565).

Almost surely, 2^1264211129 is an apocalyptic number.

It is an amenable number.

1264211129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264211129 is an equidigital number, since it uses as much as digits as its factorization.

1264211129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 1264211129 is about 35555.7467788261. The cubic root of 1264211129 is about 1081.2842316270.

The spelling of 1264211129 in words is "one billion, two hundred sixty-four million, two hundred eleven thousand, one hundred twenty-nine".