421331522 has 8 divisors (see below), whose sum is σ = 634782096. Its totient is φ = 209737492.

The previous prime is 421331513. The next prime is 421331551. The reversal of 421331522 is 225133124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463568 + ... + 464475.

It is an arithmetic number, because the mean of its divisors is an integer number (79347762).

Almost surely, 2^421331522 is an apocalyptic number.

421331522 is a deficient number, since it is larger than the sum of its proper divisors (213450574).

421331522 is a wasteful number, since it uses less digits than its factorization.

421331522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928272.

The product of its digits is 1440, while the sum is 23.

The square root of 421331522 is about 20526.3616357113. The cubic root of 421331522 is about 749.6778005662.

Adding to 421331522 its reverse (225133124), we get a palindrome (646464646).

The spelling of 421331522 in words is "four hundred twenty-one million, three hundred thirty-one thousand, five hundred twenty-two".