421432342 has 8 divisors (see below), whose sum is σ = 632365776. Its totient is φ = 210643752.

The previous prime is 421432337. The next prime is 421432391. The reversal of 421432342 is 243234124.

It is a happy number.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 28618 + ... + 40765.

It is an arithmetic number, because the mean of its divisors is an integer number (79045722).

Almost surely, 2^421432342 is an apocalyptic number.

421432342 is a deficient number, since it is larger than the sum of its proper divisors (210933434).

421432342 is a wasteful number, since it uses less digits than its factorization.

421432342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72422.

The product of its digits is 4608, while the sum is 25.

The square root of 421432342 is about 20528.8173551230. The cubic root of 421432342 is about 749.7375923485.

Adding to 421432342 its reverse (243234124), we get a palindrome (664666466).

The spelling of 421432342 in words is "four hundred twenty-one million, four hundred thirty-two thousand, three hundred forty-two".