46421 has 4 divisors (see below), whose sum is σ = 47244. Its totient is φ = 45600.

The previous prime is 46411. The next prime is 46439. The reversal of 46421 is 12464.

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 625 + 45796 = 25^2 + 214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46421 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 46421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46411) 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, 320 + ... + 441.

It is an arithmetic number, because the mean of its divisors is an integer number (11811).

2⁴⁶⁴²¹ is an apocalyptic number.

It is an amenable number.

46421 is a deficient number, since it is larger than the sum of its proper divisors (823).

46421 is an equidigital number, since it uses as much as digits as its factorization.

46421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

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

The square root of 46421 is about 215.4553317976. The cubic root of 46421 is about 35.9394558482.

Adding to 46421 its reverse (12464), we get a palindrome (58885).

The spelling of 46421 in words is "forty-six thousand, four hundred twenty-one".