421242 has 8 divisors (see below), whose sum is σ = 842496. Its totient is φ = 140412.

The previous prime is 421241. The next prime is 421273. The reversal of 421242 is 242124.

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

421242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (421241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35098 + ... + 35109.

It is an arithmetic number, because the mean of its divisors is an integer number (105312).

2⁴²¹²⁴² is an apocalyptic number.

421242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421242 is a wasteful number, since it uses less digits than its factorization.

421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70212.

The product of its digits is 128, while the sum is 15.

The square root of 421242 is about 649.0315862884. The cubic root of 421242 is about 74.9624701121.

Adding to 421242 its reverse (242124), we get a palindrome (663366).

It can be divided in two parts, 42124 and 2, that multiplied together give a palindrome (84248).

The spelling of 421242 in words is "four hundred twenty-one thousand, two hundred forty-two", and thus it is an iban number.