424221240 has 32 divisors (see below), whose sum is σ = 1272664080. Its totient is φ = 113125632.

The previous prime is 424221233. The next prime is 424221253. The reversal of 424221240 is 42122424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1767469 + ... + 1767708.

Almost surely, 2^424221240 is an apocalyptic number.

424221240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424221240 is an abundant number, since it is smaller than the sum of its proper divisors (848442840).

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

424221240 is a wasteful number, since it uses less digits than its factorization.

424221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535191 (or 3535187 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 424221240 is about 20596.6317634705. The cubic root of 424221240 is about 751.3877948943.

Adding to 424221240 its reverse (42122424), we get a palindrome (466343664).

The spelling of 424221240 in words is "four hundred twenty-four million, two hundred twenty-one thousand, two hundred forty".