421364242 has 16 divisors (see below), whose sum is σ = 683387712. Its totient is φ = 193698000.

The previous prime is 421364233. The next prime is 421364269. The reversal of 421364242 is 242463124.

It is a self number, because there is not a number n which added to its sum of digits gives 421364242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25758 + ... + 38809.

It is an arithmetic number, because the mean of its divisors is an integer number (42711732).

Almost surely, 2^421364242 is an apocalyptic number.

421364242 is a deficient number, since it is larger than the sum of its proper divisors (262023470).

421364242 is a wasteful number, since it uses less digits than its factorization.

421364242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64833.

The product of its digits is 9216, while the sum is 28.

The square root of 421364242 is about 20527.1586440988. The cubic root of 421364242 is about 749.6972063637.

The spelling of 421364242 in words is "four hundred twenty-one million, three hundred sixty-four thousand, two hundred forty-two".