6202421 has 4 divisors (see below), whose sum is σ = 6370092. Its totient is φ = 6034752.

The previous prime is 6202411. The next prime is 6202429. The reversal of 6202421 is 1242026.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1242026 = 2 ⋅621013.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 4056196 = 1465^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 6202421 - 2¹⁰ = 6201397 is a prime.

It is a super-2 number, since 2×6202421² = 76940052522482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6202421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6202429) 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, 83780 + ... + 83853.

It is an arithmetic number, because the mean of its divisors is an integer number (1592523).

Almost surely, 2^6202421 is an apocalyptic number.

It is an amenable number.

6202421 is a deficient number, since it is larger than the sum of its proper divisors (167671).

6202421 is a wasteful number, since it uses less digits than its factorization.

6202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167670.

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

The square root of 6202421 is about 2490.4660206475. The cubic root of 6202421 is about 183.7329636973.

Adding to 6202421 its reverse (1242026), we get a palindrome (7444447).

The spelling of 6202421 in words is "six million, two hundred two thousand, four hundred twenty-one".