424036381 has 2 divisors, whose sum is σ = 424036382. Its totient is φ = 424036380.

The previous prime is 424036369. The next prime is 424036409. The reversal of 424036381 is 183630424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237468100 + 186568281 = 15410^2 + 13659^2 .

It is a cyclic number.

It is not a de Polignac number, because 424036381 - 2¹¹ = 424034333 is a prime.

It is a super-2 number, since 2×424036381² = 359613704823154322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424036351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212018190 + 212018191.

It is an arithmetic number, because the mean of its divisors is an integer number (212018191).

Almost surely, 2^424036381 is an apocalyptic number.

It is an amenable number.

424036381 is a deficient number, since it is larger than the sum of its proper divisors (1).

424036381 is an equidigital number, since it uses as much as digits as its factorization.

424036381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 424036381 is about 20592.1436717987. The cubic root of 424036381 is about 751.2786372473.

It can be divided in two parts, 42403 and 6381, that added together give a palindrome (48784).

The spelling of 424036381 in words is "four hundred twenty-four million, thirty-six thousand, three hundred eighty-one".