421342 has 4 divisors (see below), whose sum is σ = 632016. Its totient is φ = 210670.

The previous prime is 421339. The next prime is 421349. The reversal of 421342 is 243124.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421349) by changing a digit.

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 as a sum of consecutive naturals, namely, 105334 + ... + 105337.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2⁴²¹³⁴² is an apocalyptic number.

421342 is a deficient number, since it is larger than the sum of its proper divisors (210674).

421342 is a wasteful number, since it uses less digits than its factorization.

421342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210673.

The product of its digits is 192, while the sum is 16.

The square root of 421342 is about 649.1086195699. The cubic root of 421342 is about 74.9684015038.

Adding to 421342 its reverse (243124), we get a palindrome (664466).

The spelling of 421342 in words is "four hundred twenty-one thousand, three hundred forty-two", and thus it is an iban number.