49421 has 4 divisors (see below), whose sum is σ = 50172. Its totient is φ = 48672.

The previous prime is 49417. The next prime is 49429. The reversal of 49421 is 12494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12494 = 2 ⋅6247.

It can be written as a sum of positive squares in 2 ways, for example, as 42025 + 7396 = 205^2 + 86^2 .

It is a cyclic number.

It is not a de Polignac number, because 49421 - 2² = 49417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49393 and 49402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49429) 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, 266 + ... + 411.

It is an arithmetic number, because the mean of its divisors is an integer number (12543).

2⁴⁹⁴²¹ is an apocalyptic number.

It is an amenable number.

49421 is a deficient number, since it is larger than the sum of its proper divisors (751).

49421 is an equidigital number, since it uses as much as digits as its factorization.

49421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750.

The product of its digits is 288, while the sum is 20.

The square root of 49421 is about 222.3083444228. The cubic root of 49421 is about 36.6975589058.

It can be divided in two parts, 494 and 21, that added together give a palindrome (515).

The spelling of 49421 in words is "forty-nine thousand, four hundred twenty-one".