421131242 has 64 divisors (see below), whose sum is σ = 806215680. Its totient is φ = 160740096.

The previous prime is 421131209. The next prime is 421131253. The reversal of 421131242 is 242131124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585359 + ... + 586077.

It is an arithmetic number, because the mean of its divisors is an integer number (12597120).

Almost surely, 2^421131242 is an apocalyptic number.

421131242 is a deficient number, since it is larger than the sum of its proper divisors (385084438).

421131242 is a wasteful number, since it uses less digits than its factorization.

421131242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its digits is 384, while the sum is 20.

The square root of 421131242 is about 20521.4824513240. The cubic root of 421131242 is about 749.5589952558.

Adding to 421131242 its reverse (242131124), we get a palindrome (663262366).

It can be divided in two parts, 4211 and 31242, that added together give a palindrome (35453).

The spelling of 421131242 in words is "four hundred twenty-one million, one hundred thirty-one thousand, two hundred forty-two".