420320242 has 12 divisors (see below), whose sum is σ = 665411166. Its totient is φ = 199098720.

The previous prime is 420320231. The next prime is 420320267. The reversal of 420320242 is 242023024.

It can be written as a sum of positive squares in only one way, i.e., 420291001 + 29241 = 20501^2 + 171^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 290359 + ... + 291802.

Almost surely, 2^420320242 is an apocalyptic number.

420320242 is a deficient number, since it is larger than the sum of its proper divisors (245090924).

420320242 is a wasteful number, since it uses less digits than its factorization.

420320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582201 (or 582182 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420320242 is about 20501.7131479299. The cubic root of 420320242 is about 749.0775277844.

Adding to 420320242 its reverse (242023024), we get a palindrome (662343266).

The spelling of 420320242 in words is "four hundred twenty million, three hundred twenty thousand, two hundred forty-two".