332420621 has 4 divisors (see below), whose sum is σ = 357991452. Its totient is φ = 306849792.

The previous prime is 332420597. The next prime is 332420623. The reversal of 332420621 is 126024233.

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 207763396 + 124657225 = 14414^2 + 11165^2 .

It is a cyclic number.

It is not a de Polignac number, because 332420621 - 2²² = 328226317 is a prime.

It is a super-2 number, since 2×332420621² = 221006938532051282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (332420623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12785396 + ... + 12785421.

It is an arithmetic number, because the mean of its divisors is an integer number (89497863).

Almost surely, 2^332420621 is an apocalyptic number.

It is an amenable number.

332420621 is a deficient number, since it is larger than the sum of its proper divisors (25570831).

332420621 is a wasteful number, since it uses less digits than its factorization.

332420621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25570830.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 332420621 is about 18232.4057929830. The cubic root of 332420621 is about 692.7278564835.

Adding to 332420621 its reverse (126024233), we get a palindrome (458444854).

The spelling of 332420621 in words is "three hundred thirty-two million, four hundred twenty thousand, six hundred twenty-one".