1021429 has 2 divisors, whose sum is σ = 1021430. Its totient is φ = 1021428.

The previous prime is 1021417. The next prime is 1021441. The reversal of 1021429 is 9241201.

It is a balanced prime because it is at equal distance from previous prime (1021417) and next prime (1021441).

It can be written as a sum of positive squares in only one way, i.e., 643204 + 378225 = 802^2 + 615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021429 - 2⁷ = 1021301 is a prime.

It is a super-3 number, since 3×1021429³ = 3197023339090609767, which contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510714 + 510715.

It is an arithmetic number, because the mean of its divisors is an integer number (510715).

2^1021429 is an apocalyptic number.

It is an amenable number.

1021429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021429 is an equidigital number, since it uses as much as digits as its factorization.

1021429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1021429 is about 1010.6577066445. The cubic root of 1021429 is about 100.7092576430.

The spelling of 1021429 in words is "one million, twenty-one thousand, four hundred twenty-nine".