421221350 has 24 divisors (see below), whose sum is σ = 854697528. Its totient is φ = 153171200.

The previous prime is 421221347. The next prime is 421221377. The reversal of 421221350 is 53122124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382379 + ... + 383478.

It is an arithmetic number, because the mean of its divisors is an integer number (35612397).

Almost surely, 2^421221350 is an apocalyptic number.

421221350 is an abundant number, since it is smaller than the sum of its proper divisors (433476178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421221350 is a wasteful number, since it uses less digits than its factorization.

421221350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765880 (or 765875 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 421221350 is about 20523.6777893242. The cubic root of 421221350 is about 749.6124516280.

Adding to 421221350 its reverse (53122124), we get a palindrome (474343474).

The spelling of 421221350 in words is "four hundred twenty-one million, two hundred twenty-one thousand, three hundred fifty".