421420344 has 64 divisors (see below), whose sum is σ = 1154023200. Its totient is φ = 127647744.

The previous prime is 421420301. The next prime is 421420369. The reversal of 421420344 is 443024124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5977 + ... + 29640.

Almost surely, 2^421420344 is an apocalyptic number.

It is an amenable number.

421420344 is an abundant number, since it is smaller than the sum of its proper divisors (732602856).

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

421420344 is a wasteful number, since it uses less digits than its factorization.

421420344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35672 (or 35668 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 421420344 is about 20528.5251296824. The cubic root of 421420344 is about 749.7304773772.

Adding to 421420344 its reverse (443024124), we get a palindrome (864444468).

The spelling of 421420344 in words is "four hundred twenty-one million, four hundred twenty thousand, three hundred forty-four".