424340381 has 2 divisors, whose sum is σ = 424340382. Its totient is φ = 424340380.

The previous prime is 424340353. The next prime is 424340429. The reversal of 424340381 is 183043424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 421480900 + 2859481 = 20530^2 + 1691^2 .

It is a cyclic number.

It is not a de Polignac number, because 424340381 - 2²⁶ = 357231517 is a prime.

It is a super-2 number, since 2×424340381² = 360129517894450322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424340311) 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, 212170190 + 212170191.

It is an arithmetic number, because the mean of its divisors is an integer number (212170191).

Almost surely, 2^424340381 is an apocalyptic number.

It is an amenable number.

424340381 is a deficient number, since it is larger than the sum of its proper divisors (1).

424340381 is an equidigital number, since it uses as much as digits as its factorization.

424340381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 424340381 is about 20599.5238051757. The cubic root of 424340381 is about 751.4581298246.

The spelling of 424340381 in words is "four hundred twenty-four million, three hundred forty thousand, three hundred eighty-one".