421213244 has 24 divisors (see below), whose sum is σ = 762668928. Its totient is φ = 203339520.

The previous prime is 421213241. The next prime is 421213271. The reversal of 421213244 is 442312124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421213241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52952 + ... + 60384.

It is an arithmetic number, because the mean of its divisors is an integer number (31777872).

Almost surely, 2^421213244 is an apocalyptic number.

It is an amenable number.

421213244 is a deficient number, since it is larger than the sum of its proper divisors (341455684).

421213244 is a wasteful number, since it uses less digits than its factorization.

421213244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7925 (or 7923 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 421213244 is about 20523.4803091483. The cubic root of 421213244 is about 749.6076430735.

Adding to 421213244 its reverse (442312124), we get a palindrome (863525368).

The spelling of 421213244 in words is "four hundred twenty-one million, two hundred thirteen thousand, two hundred forty-four".