420798242 has 8 divisors (see below), whose sum is σ = 631609500. Its totient is φ = 210261744.

The previous prime is 420798241. The next prime is 420798253. The reversal of 420798242 is 242897024.

It can be written as a sum of positive squares in 2 ways, for example, as 408888841 + 11909401 = 20221^2 + 3451^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 420798196 and 420798205.

It is not an unprimeable number, because it can be changed into a prime (420798241) 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, 64817 + ... + 71012.

Almost surely, 2^420798242 is an apocalyptic number.

420798242 is a deficient number, since it is larger than the sum of its proper divisors (210811258).

420798242 is a wasteful number, since it uses less digits than its factorization.

420798242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137380.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 420798242 is about 20513.3673978701. The cubic root of 420798242 is about 749.3613775547.

It can be divided in two parts, 4207982 and 42, that added together give a palindrome (4208024).

The spelling of 420798242 in words is "four hundred twenty million, seven hundred ninety-eight thousand, two hundred forty-two".