402741 has 12 divisors (see below), whose sum is σ = 590668. Its totient is φ = 264384.

The previous prime is 402739. The next prime is 402751. The reversal of 402741 is 147204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 77841 + 324900 = 279^2 + 570^2 .

It is not a de Polignac number, because 402741 - 2¹ = 402739 is a prime.

It is a Duffinian number.

402741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351 + ... + 963.

2⁴⁰²⁷⁴¹ is an apocalyptic number.

It is an amenable number.

402741 is a deficient number, since it is larger than the sum of its proper divisors (187927).

402741 is a wasteful number, since it uses less digits than its factorization.

402741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 689 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 402741 is about 634.6187832077. The cubic root of 402741 is about 73.8485458460.

Adding to 402741 its reverse (147204), we get a palindrome (549945).

The spelling of 402741 in words is "four hundred two thousand, seven hundred forty-one", and thus it is an iban number.