402841 has 4 divisors (see below), whose sum is σ = 407092. Its totient is φ = 398592.

The previous prime is 402823. The next prime is 402847. The reversal of 402841 is 148204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67600 + 335241 = 260^2 + 579^2 .

It is a cyclic number.

It is not a de Polignac number, because 402841 - 2⁹ = 402329 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (402847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1980 + ... + 2173.

It is an arithmetic number, because the mean of its divisors is an integer number (101773).

2⁴⁰²⁸⁴¹ is an apocalyptic number.

It is an amenable number.

402841 is a deficient number, since it is larger than the sum of its proper divisors (4251).

402841 is an equidigital number, since it uses as much as digits as its factorization.

402841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 402841 is about 634.6975657744. The cubic root of 402841 is about 73.8546575021.

The spelling of 402841 in words is "four hundred two thousand, eight hundred forty-one".