402000029 has 2 divisors, whose sum is σ = 402000030. Its totient is φ = 402000028.

The previous prime is 402000023. The next prime is 402000031. The reversal of 402000029 is 920000204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237468100 + 164531929 = 15410^2 + 12827^2 .

It is a cyclic number.

It is not a de Polignac number, because 402000029 - 2⁴ = 402000013 is a prime.

It is a Sophie Germain prime.

Together with 402000031, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401999980 and 402000016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201000014 + 201000015.

It is an arithmetic number, because the mean of its divisors is an integer number (201000015).

Almost surely, 2^402000029 is an apocalyptic number.

It is an amenable number.

402000029 is a deficient number, since it is larger than the sum of its proper divisors (1).

402000029 is an equidigital number, since it uses as much as digits as its factorization.

402000029 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 17.

The square root of 402000029 is about 20049.9383789577. The cubic root of 402000029 is about 738.0322869569.

The spelling of 402000029 in words is "four hundred two million, twenty-nine", and thus it is an aban number.