421343998 has 8 divisors (see below), whose sum is σ = 632499120. Its totient is φ = 210510960.

The previous prime is 421343953. The next prime is 421343999. The reversal of 421343998 is 899343124.

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 (421343999) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77223 + ... + 82498.

It is an arithmetic number, because the mean of its divisors is an integer number (79062390).

Almost surely, 2^421343998 is an apocalyptic number.

421343998 is a deficient number, since it is larger than the sum of its proper divisors (211155122).

421343998 is a wasteful number, since it uses less digits than its factorization.

421343998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161042.

The product of its digits is 186624, while the sum is 43.

The square root of 421343998 is about 20526.6655353469. The cubic root of 421343998 is about 749.6852000346.

The spelling of 421343998 in words is "four hundred twenty-one million, three hundred forty-three thousand, nine hundred ninety-eight".