3402403421 has 2 divisors, whose sum is σ = 3402403422. Its totient is φ = 3402403420.

The previous prime is 3402403399. The next prime is 3402403427. The reversal of 3402403421 is 1243042043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3354031396 + 48372025 = 57914^2 + 6955^2 .

It is an emirp because it is prime and its reverse (1243042043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3402403421 - 2¹⁸ = 3402141277 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 (3402403427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701201710 + 1701201711.

It is an arithmetic number, because the mean of its divisors is an integer number (1701201711).

Almost surely, 2^3402403421 is an apocalyptic number.

It is an amenable number.

3402403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3402403421 is an equidigital number, since it uses as much as digits as its factorization.

3402403421 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 23.

The square root of 3402403421 is about 58330.1244726942. The cubic root of 3402403421 is about 1504.0488275713.

Adding to 3402403421 its reverse (1243042043), we get a palindrome (4645445464).

The spelling of 3402403421 in words is "three billion, four hundred two million, four hundred three thousand, four hundred twenty-one".