426240242 has 8 divisors (see below), whose sum is σ = 643433196. Its totient is φ = 211762512.

The previous prime is 426240239. The next prime is 426240251. The reversal of 426240242 is 242042624.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 393189241 + 33051001 = 19829^2 + 5749^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678413 + ... + 679040.

Almost surely, 2^426240242 is an apocalyptic number.

426240242 is a deficient number, since it is larger than the sum of its proper divisors (217192954).

426240242 is a wasteful number, since it uses less digits than its factorization.

426240242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357612.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 426240242 is about 20645.5865017199. The cubic root of 426240242 is about 752.5779388963.

Adding to 426240242 its reverse (242042624), we get a palindrome (668282866).

The spelling of 426240242 in words is "four hundred twenty-six million, two hundred forty thousand, two hundred forty-two".