4620421 has 4 divisors (see below), whose sum is σ = 4975852. Its totient is φ = 4264992.

The previous prime is 4620419. The next prime is 4620431. The reversal of 4620421 is 1240264.

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 1179396 + 3441025 = 1086^2 + 1855^2 .

It is a cyclic number.

It is not a de Polignac number, because 4620421 - 2¹ = 4620419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4620431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177696 + ... + 177721.

It is an arithmetic number, because the mean of its divisors is an integer number (1243963).

Almost surely, 2^4620421 is an apocalyptic number.

It is an amenable number.

4620421 is a deficient number, since it is larger than the sum of its proper divisors (355431).

4620421 is a wasteful number, since it uses less digits than its factorization.

4620421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355430.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4620421 is about 2149.5164572527. The cubic root of 4620421 is about 166.5560897638.

Adding to 4620421 its reverse (1240264), we get a palindrome (5860685).

It can be divided in two parts, 46204 and 21, that added together give a square (46225 = 215²).

The spelling of 4620421 in words is "four million, six hundred twenty thousand, four hundred twenty-one".