1040420429 has 2 divisors, whose sum is σ = 1040420430. Its totient is φ = 1040420428.

The previous prime is 1040420393. The next prime is 1040420431. The reversal of 1040420429 is 9240240401.

1040420429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 936482404 + 103938025 = 30602^2 + 10195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040420429 is a prime.

Together with 1040420431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1040420398 and 1040420407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040420629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520210214 + 520210215.

It is an arithmetic number, because the mean of its divisors is an integer number (520210215).

Almost surely, 2^1040420429 is an apocalyptic number.

It is an amenable number.

1040420429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040420429 is an equidigital number, since it uses as much as digits as its factorization.

1040420429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1040420429 is about 32255.5488094684. The cubic root of 1040420429 is about 1013.2959115793.

The spelling of 1040420429 in words is "one billion, forty million, four hundred twenty thousand, four hundred twenty-nine".