420242 has 8 divisors (see below), whose sum is σ = 663600. Its totient is φ = 199044.

The previous prime is 420241. The next prime is 420253. The reversal of 420242 is 242024.

It is a happy number.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (420241) 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, 5492 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (82950).

2⁴²⁰²⁴² is an apocalyptic number.

420242 is a deficient number, since it is larger than the sum of its proper divisors (243358).

420242 is a wasteful number, since it uses less digits than its factorization.

420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 420242 is about 648.2607500073. The cubic root of 420242 is about 74.9031045004.

Adding to 420242 its reverse (242024), we get a palindrome (662266).

It can be divided in two parts, 42024 and 2, that multiplied together give a palindrome (84048).

The spelling of 420242 in words is "four hundred twenty thousand, two hundred forty-two", and thus it is an iban number.