352421421 has 32 divisors (see below), whose sum is σ = 529943040. Its totient is φ = 206472000.

The previous prime is 352421389. The next prime is 352421429. The reversal of 352421421 is 124124253.

It is not a de Polignac number, because 352421421 - 2⁵ = 352421389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 352421391 and 352421400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (352421429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142090 + ... + 144548.

It is an arithmetic number, because the mean of its divisors is an integer number (16560720).

Almost surely, 2^352421421 is an apocalyptic number.

It is an amenable number.

352421421 is a deficient number, since it is larger than the sum of its proper divisors (177521619).

352421421 is a wasteful number, since it uses less digits than its factorization.

352421421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617.

The product of its digits is 1920, while the sum is 24.

The square root of 352421421 is about 18772.8905872271. The cubic root of 352421421 is about 706.3513279733.

Adding to 352421421 its reverse (124124253), we get a palindrome (476545674).

It can be divided in two parts, 35242 and 1421, that added together give a palindrome (36663).

The spelling of 352421421 in words is "three hundred fifty-two million, four hundred twenty-one thousand, four hundred twenty-one".