421222340 has 48 divisors (see below), whose sum is σ = 1102840704. Its totient is φ = 131289600.

The previous prime is 421222313. The next prime is 421222363. The reversal of 421222340 is 43222124.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 135221 + ... + 138300.

It is an arithmetic number, because the mean of its divisors is an integer number (22975848).

Almost surely, 2^421222340 is an apocalyptic number.

It is an amenable number.

421222340 is an abundant number, since it is smaller than the sum of its proper divisors (681618364).

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

421222340 is a wasteful number, since it uses less digits than its factorization.

421222340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273548 (or 273546 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 421222340 is about 20523.7019077943. The cubic root of 421222340 is about 749.6130389010.

Adding to 421222340 its reverse (43222124), we get a palindrome (464444464).

The spelling of 421222340 in words is "four hundred twenty-one million, two hundred twenty-two thousand, three hundred forty".