421124242 has 16 divisors (see below), whose sum is σ = 787557312. Its totient is φ = 164074320.

The previous prime is 421124191. The next prime is 421124251. The reversal of 421124242 is 242421124.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367133 + ... + 1367440.

It is an arithmetic number, because the mean of its divisors is an integer number (49222332).

Almost surely, 2^421124242 is an apocalyptic number.

421124242 is a deficient number, since it is larger than the sum of its proper divisors (366433070).

421124242 is a wasteful number, since it uses less digits than its factorization.

421124242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734593.

The product of its digits is 1024, while the sum is 22.

The square root of 421124242 is about 20521.3118976346. The cubic root of 421124242 is about 749.5548422020.

Adding to 421124242 its reverse (242421124), we get a palindrome (663545366).

The spelling of 421124242 in words is "four hundred twenty-one million, one hundred twenty-four thousand, two hundred forty-two".