402419 has 2 divisors, whose sum is σ = 402420. Its totient is φ = 402418.

The previous prime is 402403. The next prime is 402443. The reversal of 402419 is 914204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402419 - 2⁴ = 402403 is a prime.

It is a super-2 number, since 2×402419² = 323882103122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 402419.

It is not a weakly prime, because it can be changed into another prime (404419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201209 + 201210.

It is an arithmetic number, because the mean of its divisors is an integer number (201210).

2⁴⁰²⁴¹⁹ is an apocalyptic number.

402419 is a deficient number, since it is larger than the sum of its proper divisors (1).

402419 is an equidigital number, since it uses as much as digits as its factorization.

402419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 402419 is about 634.3650368676. The cubic root of 402419 is about 73.8288594372.

The spelling of 402419 in words is "four hundred two thousand, four hundred nineteen".