1292926321 has 2 divisors, whose sum is σ = 1292926322. Its totient is φ = 1292926320.

The previous prime is 1292926303. The next prime is 1292926339. The reversal of 1292926321 is 1236292921.

It is the 14680-th star number.

It is a balanced prime because it is at equal distance from previous prime (1292926303) and next prime (1292926339).

It can be written as a sum of positive squares in only one way, i.e., 885895696 + 407030625 = 29764^2 + 20175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292926321 - 2¹⁷ = 1292795249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1292026321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646463160 + 646463161.

It is an arithmetic number, because the mean of its divisors is an integer number (646463161).

Almost surely, 2^1292926321 is an apocalyptic number.

It is an amenable number.

1292926321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292926321 is an equidigital number, since it uses as much as digits as its factorization.

1292926321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 1292926321 is about 35957.2846722330. The cubic root of 1292926321 is about 1089.4097528167.

The spelling of 1292926321 in words is "one billion, two hundred ninety-two million, nine hundred twenty-six thousand, three hundred twenty-one".