421388246 has 8 divisors (see below), whose sum is σ = 632877840. Its totient is φ = 210428968.

The previous prime is 421388237. The next prime is 421388249. The reversal of 421388246 is 642883124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421388249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130586 + ... + 133773.

It is an arithmetic number, because the mean of its divisors is an integer number (79109730).

Almost surely, 2^421388246 is an apocalyptic number.

421388246 is a deficient number, since it is larger than the sum of its proper divisors (211489594).

421388246 is a wasteful number, since it uses less digits than its factorization.

421388246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265158.

The product of its digits is 73728, while the sum is 38.

The square root of 421388246 is about 20527.7433245839. The cubic root of 421388246 is about 749.7114421786.

The spelling of 421388246 in words is "four hundred twenty-one million, three hundred eighty-eight thousand, two hundred forty-six".