2402381 has 2 divisors, whose sum is σ = 2402382. Its totient is φ = 2402380.

The previous prime is 2402369. The next prime is 2402383. The reversal of 2402381 is 1832042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1713481 + 688900 = 1309^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402381 - 2⁶ = 2402317 is a prime.

It is a super-2 number, since 2×2402381² = 11542868938322, which contains 22 as substring.

Together with 2402383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2402383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201190 + 1201191.

It is an arithmetic number, because the mean of its divisors is an integer number (1201191).

2^2402381 is an apocalyptic number.

It is an amenable number.

2402381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402381 is an equidigital number, since it uses as much as digits as its factorization.

2402381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2402381 is about 1549.9616124279. The cubic root of 2402381 is about 133.9308509343.

The spelling of 2402381 in words is "two million, four hundred two thousand, three hundred eighty-one".