402461 has 4 divisors (see below), whose sum is σ = 411072. Its totient is φ = 393852.

The previous prime is 402443. The next prime is 402487. The reversal of 402461 is 164204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402461 - 2¹⁸ = 140317 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 402461.

It is not an unprimeable number, because it can be changed into a prime (402361) 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, 4235 + ... + 4328.

It is an arithmetic number, because the mean of its divisors is an integer number (102768).

2⁴⁰²⁴⁶¹ is an apocalyptic number.

It is an amenable number.

402461 is a deficient number, since it is larger than the sum of its proper divisors (8611).

402461 is an equidigital number, since it uses as much as digits as its factorization.

402461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402461 is about 634.3981399721. The cubic root of 402461 is about 73.8314278250.

Adding to 402461 its reverse (164204), we get a palindrome (566665).

The spelling of 402461 in words is "four hundred two thousand, four hundred sixty-one".