1029322421 has 2 divisors, whose sum is σ = 1029322422. Its totient is φ = 1029322420.

The previous prime is 1029322403. The next prime is 1029322451. The reversal of 1029322421 is 1242239201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900840196 + 128482225 = 30014^2 + 11335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1029322421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1029322451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514661210 + 514661211.

It is an arithmetic number, because the mean of its divisors is an integer number (514661211).

Almost surely, 2^1029322421 is an apocalyptic number.

It is an amenable number.

1029322421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029322421 is an equidigital number, since it uses as much as digits as its factorization.

1029322421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1029322421 is about 32083.0550446805. The cubic root of 1029322421 is about 1009.6801329996.

The spelling of 1029322421 in words is "one billion, twenty-nine million, three hundred twenty-two thousand, four hundred twenty-one".