420003242 has 4 divisors (see below), whose sum is σ = 630004866. Its totient is φ = 210001620.

The previous prime is 420003223. The next prime is 420003251. The reversal of 420003242 is 242300024.

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

It can be written as a sum of positive squares in only one way, i.e., 249987721 + 170015521 = 15811^2 + 13039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420003242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000809 + ... + 105000812.

Almost surely, 2^420003242 is an apocalyptic number.

420003242 is a deficient number, since it is larger than the sum of its proper divisors (210001624).

420003242 is a wasteful number, since it uses less digits than its factorization.

420003242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210001623.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420003242 is about 20493.9806284675. The cubic root of 420003242 is about 748.8891656156.

Adding to 420003242 its reverse (242300024), we get a palindrome (662303266).

The spelling of 420003242 in words is "four hundred twenty million, three thousand, two hundred forty-two".